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SpringWorks Therapeutics Receives Positive CHMP Opinion for Mirdametinib for the Treatment of Adult and Pediatric Patients with NF1-PN
SpringWorks Therapeutics Receives Positive CHMP Opinion for Mirdametinib for the Treatment of Adult and Pediatric Patients with NF1-PN

Yahoo

time23-05-2025

  • Business
  • Yahoo

SpringWorks Therapeutics Receives Positive CHMP Opinion for Mirdametinib for the Treatment of Adult and Pediatric Patients with NF1-PN

– If approved, mirdametinib is expected to be the first and only therapy in the European Union with marketing authorization for both adults and children with NF1-PN – – Decision from European Commission expected in the third quarter of 2025 – STAMFORD, Conn., May 23, 2025 (GLOBE NEWSWIRE) -- SpringWorks Therapeutics, Inc. (Nasdaq: SWTX), a commercial-stage biopharmaceutical company focused on severe rare diseases and cancer, announced today that the European Medicines Agency's (EMA) Committee for Medicinal Products for Human Use (CHMP) has adopted a positive opinion recommending the granting of a conditional marketing authorization for mirdametinib, a MEK inhibitor, for the treatment of symptomatic, inoperable plexiform neurofibromas (PN) in pediatric and adult patients with neurofibromatosis type 1 (NF1) aged 2 years and above. The European Commission (EC) will review the CHMP opinion and is expected to make a final decision regarding the approval in the third quarter of 2025. If approved, mirdametinib will be available in 1 and 2 mg capsules and in a 1 mg dispersible tablet, which dissolves easily in water. 'The positive opinion from the CHMP brings us one step closer to delivering our medicine to both children and adults with NF1-PN in Europe, who we believe are in need of new therapeutic advances,' said Saqib Islam, Chief Executive Officer of SpringWorks. 'Upon approval, we look forward to bringing mirdametinib to appropriate patients in Europe as quickly as possible.' NF1 is a genetic disorder that affects approximately 3 in 10,000 people in the EU, or an estimated 135,000 people.1,2 Patients with NF1 have approximately a 30 to 50% lifetime risk of developing plexiform neurofibromas, which are tumors that grow in an infiltrative pattern along the peripheral nerve sheath and that can cause severe disfigurement, pain and functional impairment.3,4​ Plexiform neurofibromas can transform into malignant peripheral nerve sheath tumors, an aggressive and potentially fatal disease.5 Surgical removal can be challenging due to the infiltrative tumor growth pattern of plexiform neurofibromas along nerves, and up to approximately 85% of plexiform neurofibromas are considered not amenable to complete resection.6,7,8 'NF1-PN is a genetic disorder that can be highly morbid and unpredictable. It takes a significant physical and emotional toll on patients and their caregivers, and there have been limited treatment options available,' said Ignacio Blanco, MD, PhD, Chairman of the National Reference Center for Adult Patients with Neurofibromatosis at Hospital Universitari Germans Trias i Pujol, Spain. 'Surgical removal of plexiform neurofibromas can be challenging and is often not possible, so if approved, mirdametinib could be an important treatment option for children and adult patients in Europe.' The CHMP opinion was based on the Marketing Authorization Application (MAA) for mirdametinib, which was validated by the EMA in August 2024. The MAA centered on the primary results from the Phase 2b ReNeu trial, which enrolled 114 patients with NF1-PN age 2 years or older (58 adults and 56 pediatric patients). The study met the primary endpoint of confirmed objective response rate (ORR), as assessed by blinded independent central review, demonstrating an ORR of 41% (N= 24/58) in adults and 52% in children (N=29/56). The median best percentage change in target PN volume was -41% (range: -90 to 13%) in adults and -42% (range: -91 to 48%) in children. Among those with a confirmed response, 88% percent of adults and 90% of children had a response of at least 12 months duration, and 50% and 48%, respectively, had a response of at least 24 months duration. Both adults and children also experienced early and sustained significant improvements from baseline in pain and quality of life as assessed across multiple patient-reported outcome tools.9 Mirdametinib demonstrated a manageable safety and tolerability profile. The most common adverse events (>25%) reported in adults receiving mirdametinib were rash, diarrhea, nausea, musculoskeletal pain, vomiting and fatigue. The most common adverse events (>25%) occurring in children were rash, diarrhea, musculoskeletal pain, abdominal pain, vomiting, headache, paronychia, left ventricular dysfunction and nausea.9 Mirdametinib is approved in the U.S. for the treatment of adult and pediatric patients 2 years of age and older with neurofibromatosis type 1 (NF1) who have symptomatic plexiform neurofibromas (PN) not amenable to complete resection. About the ReNeu TrialReNeu (NCT03962543) is an ongoing, multi-center, open-label, single arm, Phase 2b trial evaluating the efficacy, safety and tolerability of mirdametinib in patients ≥2 years of age with an inoperable NF1-associated PN causing significant morbidity. The study enrolled 114 patients to receive mirdametinib at a dose of 2 mg/m2 twice daily (maximum dose of 4 mg twice daily) without regard to food. Mirdametinib was administered orally in a 3-week on, 1-week off dosing schedule as either a capsule or dispersible tablet. The primary endpoint is confirmed objective response rate (ORR) defined as the proportion of patients with a ≥20% reduction in target tumor volume on consecutive scans during the 24-cycle treatment phase, as measured by MRI and assessed by blinded independent central review. Secondary endpoints include safety and tolerability, duration of response, and changes in patient-reported outcomes from baseline to Cycle 13. The treatment phase of the trial is complete, and results were presented at the 2024 American Society of Clinical Oncology (ASCO) Annual Meeting. Patients who completed the treatment phase were eligible to continue receiving treatment in the optional long-term follow-up portion of the study, which is ongoing. About NF1-PNNeurofibromatosis type 1 (NF1) is a rare genetic disorder that arises from mutations in the NF1 gene, which encodes for neurofibromin, a key suppressor of the MAPK pathway.10,11 NF1 is the most common form of neurofibromatosis, with an estimated global birth incidence of approximately 1 in 2,500 individuals.3,12 In the EU, NF1 affects approximately 3 in 10,000 people, or an estimated 135,000 people.1,2 The clinical course of NF1 is heterogeneous and manifests in a variety of symptoms across numerous organ systems, including abnormal pigmentation, skeletal deformities, tumor growth and neurological complications, such as cognitive impairment.13 Patients with NF1 have an 8 to 15-year mean reduction in their life expectancy compared to the general population.1 NF patients have approximately a 30%-50% lifetime risk of developing plexiform neurofibromas, or PN, which are tumors that grow in an infiltrative pattern along the peripheral nerve sheath and that can cause severe disfigurement, pain and functional impairment; in rare cases, NF1-PN may be fatal.3,4,5 NF1-PNs are most often diagnosed in the first two decades of life.3 These tumors can be aggressive and are associated with clinically significant morbidities; typically, they grow more rapidly during childhood.14,15 Surgical removal of these tumors can be challenging due to the infiltrative tumor growth pattern along nerves and can lead to permanent nerve damage and disfigurement.5 Up to approximately 85% of plexiform neurofibromas are considered not amenable to complete resection.6,7,8 About MirdametinibMirdametinib is an oral, small molecule MEK inhibitor approved in the United States for the treatment of adult and pediatric patients 2 years of age and older with neurofibromatosis type 1 (NF1) who have symptomatic plexiform neurofibromas (PN) not amenable to complete resection. The FDA and the European Commission have granted Orphan Drug designation for mirdametinib for the treatment of NF1. About SpringWorks TherapeuticsSpringWorks is a commercial-stage biopharmaceutical company dedicated to improving the lives of patients with severe rare diseases and cancer. We developed and are commercializing the first and only FDA-approved medicine for adults with desmoid tumors and the first and only FDA-approved medicine for both adults and children with neurofibromatosis type 1 associated plexiform neurofibromas (NF1-PN). We are also advancing a diverse portfolio of novel targeted therapy product candidates for patients with both solid tumors and hematological cancers. For more information, visit and follow @SpringWorksTx on X, LinkedIn, Facebook, Instagram and YouTube. Forward-Looking Statements This press release contains 'forward-looking statements' within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, relating to our business, operations, and financial conditions, including but not limited to current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development and commercialization plans, our preclinical and clinical results, our expectations regarding the timing and results of the EMA's review of our MAA for mirdametinib and our plans to begin its initial launch in the European Union in 2025, our plans to continue to study mirdametinib in pediatric and young adult patients with low-grade gliomas in a Phase 2 study, as well as relating to other future conditions. Words such as, but not limited to, 'look forward to,' 'believe,' 'expect,' 'anticipate,' 'estimate,' 'intend,' 'plan,' 'would,' 'should' and 'could,' and similar expressions or words, identify forward-looking statements. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release, including, without limitation, risks relating to: (i) the fact that topline or interim data from clinical studies may not be predictive of the final or more detailed results of such study or the results of other ongoing or future studies, (ii) the success and timing of our collaboration partners' ongoing and planned clinical trials, (iii) the timing of our planned regulatory submissions and interactions, including the timing and outcome of decisions made by the FDA, EMA, and other regulatory authorities, investigational review boards at clinical trial sites and publication review bodies, (iv) whether EMA or other regulatory authorities will require additional information or further studies, or may fail or refuse to approve or may delay approval of our product candidates, including mirdametinib, (v) our ability to obtain regulatory approval of any of our product candidates or maintain regulatory approvals granted for our products, (vi) our plans to research, discover and develop additional product candidates, (vii) our ability to enter into collaborations for the development of new product candidates and our ability to realize the benefits expected from such collaborations, (viii) our ability to maintain adequate patent protection and successfully enforce patent claims against third parties, (ix) the adequacy of our cash position to fund our operations through any time period indicated herein, (x) our ability to establish manufacturing capabilities, and our collaboration partners' abilities to manufacture our product candidates and scale production, and (xi) our ability to meet any specific milestones set forth herein. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. Although we believe the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will prove to be correct. Accordingly, readers are cautioned not to place undue reliance on these forward-looking statements. For further information regarding the risks, uncertainties and other factors that may cause differences between SpringWorks' expectations and actual results, you should review the 'Risk Factors' in Item 1A of Part II of SpringWorks' Quarterly Report on Form 10-Q for the quarter ended March 31, 2025 as well as discussions of potential risks, uncertainties and other important factors in SpringWorks' subsequent filings. Contacts: MediaMedia@ InvestorsInvestors@ References Lee TJ, et al. Incidence and prevalence of neurofibromatosis type 1 and 2: a systematic review and meta-analysis. Orphanet J Rare Dis. 2023;18(1):292. doi:10.1186/s13023-023-02911-2. Eurostat. Population and population change statistics. Eurostat Statistics Explained. 2024. Available at: Accessed May 8, 2025. Prada C, Rangwala F, Martin L, et al. Pediatric Plexiform Neurofibromas: Impact on Morbidity and Mortality in Neurofibromatosis Type 1. J Pediatr. 2012;160(3):461-467. doi:10.1016/ Miller DT, et al. Health supervision for children with neurofibromatosis Type 1. Pediatrics. 2019;143(5):e20190660. Kamaludin, Siti Nurhazwani, et al. 'Plexiform neurofibromatosis with peripheral malignant nerve sheath tumor and scoliosis - more surveillance imaging needed?' Radiology case reports vol. 17,7 2388-2393. 6 May. 2022, doi:10.1016/ Needle M, Cnaan A, Dattilo J, et al. Prognostic signs in the surgical management of plexiform neurofibroma: The Children's Hospital of Philadelphia experience, 1974-1994. J Pediatr. 1997;131(5):678-682. doi:10.1016/s0022-3476(97)70092-1. Ejerskov, C., Farholt, S., Nielsen, F.S.K. et al. Clinical Characteristics and Management of Children and Adults with Neurofibromatosis Type 1 and Plexiform Neurofibromas in Denmark: A Nationwide Study. Oncol Ther 11, 97–110 (2023). doi:10.1007/s40487-022-00213-4. Wolkenstein, P. et al. (2023) 'French cohort of children and adolescents with neurofibromatosis type 1 and symptomatic inoperable plexiform neurofibromas: Cassiopea study', European Journal of Medical Genetics, 66(5), p. 104734. doi:10.1016/ Moertel CL, Fisher MJ, Weiss BD, et al. ReNeu: A pivotal, Phase IIb trial of mirdametinib in adults and children with symptomatic neurofibromatosis type 1-associated plexiform neurofibroma. J Clin Oncol. 2024;JCO.24.01034. doi:10.1200/JCO.24.01034. Yap YS, McPherson JR, Ong CK, et al. The NF1 gene revisited - from bench to bedside. Oncotarget. 2014;5(15):5873-5892. doi:10.18632/oncotarget.2194. Rasmussen S, Friedman J. NF1 Gene and Neurofibromatosis 1. Am J Epidemiol. 2000;151(1):33-40. doi:10.1093/ Ferner R. Neurofibromatosis 1 and neurofibromatosis 2: a twenty first century perspective. The Lancet Neurology. 2007;6(4):340-351. doi:10.1016/s1474-4422(07)70075-3. Weiss, Brian D et al. 'NF106: A Neurofibromatosis Clinical Trials Consortium Phase II Trial of the MEK Inhibitor Mirdametinib (PD-0325901) in Adolescents and Adults with NF1-Related Plexiform Neurofibromas.' Journal of clinical oncology: official journal of the American Society of Clinical Oncology vol. 39,7 (2021):797-806. doi:10.1200/JCO.20.02220. Gross A, Singh G, Akshintala S, et al. Association of plexiform neurofibroma volume changes and development of clinical morbidities in neurofibromatosis 1. Neuro Oncol. 2018;20(12):1643-1651. doi:10.1093/neuonc/noy067. Nguyen R, Dombi E, Widemann B, et al. Growth dynamics of plexiform neurofibromas: a retrospective cohort study of 201 patients with neurofibromatosis 1. Orphanet J Rare Dis. 2012;7(1):75. doi:10.1186/ in retrieving data Sign in to access your portfolio Error in retrieving data Error in retrieving data Error in retrieving data Error in retrieving data

SpringWorks Therapeutics Reports Fourth Quarter and Full Year 2024 Financial Results and Highlights Recent Business Updates
SpringWorks Therapeutics Reports Fourth Quarter and Full Year 2024 Financial Results and Highlights Recent Business Updates

Associated Press

time20-02-2025

  • Business
  • Associated Press

SpringWorks Therapeutics Reports Fourth Quarter and Full Year 2024 Financial Results and Highlights Recent Business Updates

– Achieved $61.5 million and $172.0 million in fourth quarter and full year 2024 OGSIVEO ® (nirogacestat) U.S. net product revenues, respectively – – Received FDA approval of GOMEKLI™ (mirdametinib) for the treatment of adult and pediatric patients with symptomatic NF1-PN not amendable to complete resection – – Ended 2024 with $461.9 million in cash, cash equivalents and marketable securities – STAMFORD, Conn., Feb. 20, 2025 (GLOBE NEWSWIRE) -- SpringWorks Therapeutics, Inc. (Nasdaq: SWTX), a commercial-stage biopharmaceutical company focused on severe rare diseases and cancer, today reported financial results for the fourth quarter and full year periods ended December 31, 2024 and provided an update on recent company developments. 'We are very pleased with the strong execution of OGSIVEO in 2024 and believe that we are still in the early stages of realizing the full potential of our opportunity to serve the desmoid tumor community. With the recent FDA approval of GOMEKLI for adults and children with NF1-PN, we believe we are ready to deliver another strong launch and are delighted that the broad label enables us to help patients throughout their treatment journey,' said Saqib Islam, Chief Executive Officer of SpringWorks. 'In parallel with our U.S. launches, we are working with urgency to bring our medicines to patients globally and are advancing a diversified pipeline across a variety of indications that provide the potential for us to develop important therapeutic advances for patients who are currently underserved.' Recent Business Highlights and Upcoming Milestones OGSIVEO ® (Nirogacestat) Continued strong commercial execution of the OGSIVEO launch in the U.S. with fourth quarter and full-year 2024 U.S. net product revenue for OGSIVEO of $61.5 million and $172.0 million, respectively. A Marketing Authorization Application (MAA) for nirogacestat for the treatment of adult patients with desmoid tumors is under review with the European Medicines Agency (EMA). If approved, SpringWorks expects to launch OGSIVEO following reimbursement authorization in individual EU countries, beginning with Germany in mid-2025. Presented long-term follow-up data from the Phase 3 DeFi trial of nirogacestat in adults with progressing desmoid tumors at the 2024 Connective Tissue Oncology Society Annual Meeting, which highlighted further reductions in tumor size, increase in objective response rate, sustained improvement in desmoid tumor symptoms, and consistent safety profile. SpringWorks expects to publish these data in a peer-reviewed journal in 2025. SpringWorks expects to report initial data from the Phase 2 trial evaluating nirogacestat as a monotherapy in patients with ovarian granulosa cell tumors in the first half of 2025. SpringWorks continues to support several industry and academic collaborator studies evaluating nirogacestat as part of B-cell maturation antigen (BCMA) combination therapy regimens across treatment lines in patients with multiple myeloma. GOMEKLI ™ (Mirdametinib) On February 11, 2025, SpringWorks received U.S. Food and Drug Administration (FDA) approval for GOMEKLI, an oral MEK inhibitor, for the treatment of adult and pediatric patients 2 years of age and older with neurofibromatosis type 1 (NF1) who have symptomatic plexiform neurofibromas (PN) not amenable to complete resection. GOMEKLI is the first and only medicine approved for both adults and children with NF1-PN. With the approval, SpringWorks was granted a rare pediatric disease priority review voucher (PRV) by the FDA. GOMEKLI is now available through a specialty pharmacy and specialty distributor network in the United States. An MAA for mirdametinib for the treatment of adults and children with NF1-PN is under review with the EMA. If approved, SpringWorks expects to begin its initial launch in the European Union in 2025. A Phase 2 study evaluating mirdametinib in pediatric and young adult patients with low-grade gliomas (LGG) is ongoing and enrolling patients. Emerging Pipeline A Phase 1b trial of brimarafenib and Amgen's EGFR inhibitor, panitumumab, in colorectal and pancreatic cancer patients with known MAPK pathway mutations is ongoing. Brimarafenib is an investigational, selective RAF dimer inhibitor being developed by MapKure, LLC, a joint venture between SpringWorks and BeiGene, Ltd. SpringWorks is continuing to enroll patients in a Phase 1 trial of SW-682, an investigational novel, oral, potent, and selective pan-TEAD inhibitor, in Hippo-mutant solid tumors. SpringWorks obtained an exclusive, global license from Rappta Therapeutics Oy for a first-in-class molecular glue of specific Protein Phosphatase 2A (PP2A) complexes. PP2A mutations represent a class of targetable oncogenic drivers in molecularly defined subsets of uterine cancer patients with high unmet need. In preclinical models of PP2A mutant uterine cancer, SW-3431 (formerly RPT04402) showed rapid, deep and durable tumor regressions as a monotherapy. SpringWorks expects to file an Investigational New Drug (IND) application for SW-3431 by the end of 2025. Fourth Quarter and Full Year 2024 Financial Results Product Revenues: OGSIVEO net product revenues were $61.5 million and $172.0 million in the fourth quarter of 2024 and full year 2024, respectively. Selling, General and Administrative (SG&A) Expenses: SG&A expenses were $77.1 million and $256.7 million for the fourth quarter and full year 2024, respectively, compared to $59.8 million and $197.6 million for the comparable periods of 2023. The increase in SG&A expense for the fourth quarter and the full year 2024 were largely attributable to commercial readiness activities to support the U.S. launch of GOMEKLI as well as commercial activity supporting the U.S. launch of OGSIVEO. Research and Development (R&D) Expenses: R&D expenses were $60.2 million and $200.5 million for the fourth quarter and full year 2024, respectively, compared to $43.7 million and $150.5 million for the comparable periods of 2023. The increase in R&D expense for the fourth quarter and year ended 2024 was primarily attributable to an increase in external costs related to licensing fees, drug manufacturing, clinical trials, other research, consulting and professional services. Net Loss Attributable to Common Stockholders: SpringWorks reported a net loss of $77.3 million, or $1.04 per share, for the fourth quarter of 2024 and a net loss of $258.1 million, or $3.48 loss per share, for the year ended December 31, 2024. This compares to a net loss of $94.3 million, or $1.44 per share, for the fourth quarter of 2023 and a net loss of $325.1 million, or $5.15 per share for the year ended December 31, 2023. Cash Position: Cash, cash equivalents and marketable securities were $461.9 million as of December 31, 2024. Additional Information Additional information on the Company's results can be found on the Investors and Media section of the SpringWorks website at The previously scheduled conference call and webcast has been cancelled. About SpringWorks Therapeutics SpringWorks is a commercial-stage biopharmaceutical company dedicated to improving the lives of patients with severe rare diseases and cancer. We developed and are commercializing OGSIVEO® (nirogacestat) as the first and only FDA-approved medicine for adults with desmoid tumors and GOMEKLI™ (mirdametinib) as the first and only FDA-approved medicine for both adults and children with neurofibromatosis type 1 associated plexiform neurofibromas (NF1-PN). We are also advancing a diverse portfolio of novel targeted therapy product candidates for patients with both solid tumors and hematological cancers. For more information, visit and follow @SpringWorksTx on X, LinkedIn, Facebook, Instagram, and YouTube. SpringWorks uses its website as a means of disclosing material non-public information and for complying with its disclosure obligations under Regulation FD. Such disclosures will be included on SpringWorks' website in the Investors & Media section. Accordingly, investors should monitor such portions of the SpringWorks website, in addition to following press releases, SEC filings and public conference calls and webcasts. Forward-Looking Statements This press release contains 'forward-looking statements' within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, relating to our business, operations, and financial conditions, including but not limited to current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development and commercialization plans, our preclinical and clinical results, the market potential of OGSIVEO for adult patients with desmoid tumors, expectations regarding timing and results of the EMA's review of the MAA for nirogacestat, including the adequacy of the data contained in the MAA to serve as the basis for marketing approval of nirogacestat for the treatment of desmoid tumors in the European Union and the expected timing of launch of OGSIVEO in individual European Union countries, beginning in mid-2025, our plans to publish additional data from the Phase 3 DeFi clinical trial in a peer-reviewed medical journal in 2025, the potential for GOMEKLI to become an important new treatment for patients with NF1-PN, our expectations regarding the timing and results of the EMA's review of our MAA for mirdametinib and our plans to begin its initial launch in the European Union in 2025, expectations regarding the timing and initial data from the Phase 2 trial evaluating nirogacestat in patients with recurrent ovarian granulosa cell tumors, our plans to continue to support nirogacestat as part of B-cell maturation antigen combination therapy regimens across treatment lines in patients with multiple myeloma, our plans to continue to study mirdametinib in pediatric and young adult patients with low-grade gliomas in a Phase 2 study, as well as relating to other future conditions. Words such as, but not limited to, 'look forward to,' 'believe,' 'expect,' 'anticipate,' 'estimate,' 'intend,' 'plan,' 'would,' 'should' and 'could,' and similar expressions or words, identify forward-looking statements. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release, including, without limitation, risks relating to: (i) the success of our commercialization efforts with respect to OGSIVEO and GOMEKLI, (ii) our limited experience as a commercial company, (iii) our ability to obtain or maintain adequate coverage and reimbursement for OGSIVEO and GOMEKLI, (iv) the success and timing of our product development activities, including the initiation and completion of our clinical trials, (v) our expectations regarding the potential clinical benefit of OGSIVEO for adult patients with desmoid tumors who require systemic treatment and the potential clinical benefit of GOMEKLI for adult and pediatric patients with symptomatic NF1-PN not amenable to complete resection, (vi) the potential for OGSIVEO to become the new standard of care for adult patients with desmoid tumors and the potential for GOMEKLI to become the new standard of care for adult and pediatric patients with NF1-PN, (vii) estimates regarding the number of adult patients who are diagnosed with desmoid tumors annually in the U.S. and the potential market for OGSIVEO, and estimates regarding the number of adult and pediatric patients who are diagnosed with NF1-PN annually in the U.S. and the potential market for GOMEKLI, (viii) the fact that topline or interim data from clinical studies may not be predictive of the final or more detailed results of such study or the results of other ongoing or future studies, (ix) the success and timing of our collaboration partners' ongoing and planned clinical trials, (x) the timing of our planned regulatory submissions and interactions, including the timing and outcome of decisions made by the FDA, EMA, and other regulatory authorities, investigational review boards at clinical trial sites and publication review bodies, (xi) whether EMA or other regulatory authorities will require additional information or further studies, or may fail or refuse to approve or may delay approval of our product candidates, including nirogacestat and mirdametinib, (xii) our ability to obtain regulatory approval of any of our product candidates or maintain regulatory approvals granted for our products, (xiii) our plans to research, discover and develop additional product candidates, (xiv) our ability to enter into collaborations for the development of new product candidates and our ability to realize the benefits expected from such collaborations, (xv) our ability to maintain adequate patent protection and successfully enforce patent claims against third parties, (xvi) the adequacy of our cash position to fund our operations through any time period indicated herein, (xvii) our ability to establish manufacturing capabilities, and our collaboration partners' abilities to manufacture our product candidates and scale production, and (xviii) our ability to meet any specific milestones set forth herein. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. Although we believe the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will prove to be correct. Accordingly, readers are cautioned not to place undue reliance on these forward-looking statements. For further information regarding the risks, uncertainties and other factors that may cause differences between SpringWorks' expectations and actual results, you should review the 'Risk Factors' in Item 1A of Part I of SpringWorks' Annual Report on Form 10-K for the year ended December 31, 2024, as well as discussions of potential risks, uncertainties and other important factors in SpringWorks' subsequent filings. SpringWorks Therapeutics, Inc. Condensed Consolidated Statements of Operations (Unaudited) Year Ended December 31, (in thousands, except share and per-share data) 2024 2023 2022 Revenue: Product revenue, net $ 172,042 $ 5,447 $ — Other revenue 19,547 — — Total revenue 191,589 5,447 — Operating expenses: Cost of product revenue 12,550 422 — Selling, general and administrative 256,652 197,551 134,552 Research and development 200,518 150,487 146,122 Total operating expenses 469,720 348,460 280,674 Loss from operations (278,131) (343,013) (280,674) Interest and other income: Interest and other income, net 26,000 22,947 6,147 Total interest and other income 26,000 22,947 6,147 Equity method investment loss (6,000) (5,038) (2,890) Net loss $ (258,131) $ (325,104) $ (277,417) Net loss per share, basic and diluted $ (3.48) $ (5.15) $ (5.21) Weighted average common shares outstanding, basic and diluted 74,132,811 63,123,936 53,290,528 SpringWorks Therapeutics, Inc. Selected Balance Sheet Data (Unaudited) As of December 31, 2024 2023 (in thousands) Cash, cash equivalents and marketable securities $ 461,918 $ 662,588 Working Capital (1) 280,475 422,742 Total assets 587,276 725,788 Total liabilities 106,172 99,569 Accumulated deficit (1,153,165) (895,034) Total stockholders' equity 481,104 626,219 (1) We define Working Capital as current assets less current liabilities. Contacts: Media

FDA approves new genetic disorder drug
FDA approves new genetic disorder drug

Yahoo

time12-02-2025

  • Health
  • Yahoo

FDA approves new genetic disorder drug

The Food and Drug Administration (FDA) approved a new drug to treat a disorder causing the growth of noncancerous tumors on nerves throughout the body. The federal agency said on Tuesday it greenlighted SpringWorks Therapeutics's drug Gomekli for patients dealing with neurofibromatosis type 1 (NF1) 'who have symptomatic plexiform neurofibromas (PN) not amenable to complete resection.' The drug was approved after a multicenter, single-arm trial of 114 patients — 58 adults — with 'symptomatic, inoperable NF1-associated PN causing significant morbidity,' according to the FDA. Gomekli showcased at least a 20 percent reduction in the volume of the tumor in more than 50 percent of pediatric patients and 41 percent of adult patients, Reuters noted. 'The NF1-PN patient community has a great need for more treatment options. With today's approval, we are honored to serve both adults and children with NF1-PN and provide them with a therapy that has the potential to shrink their tumors and offer meaningful symptomatic relief,' SpringWorks CEO Saqib Islam said in a statement on Tuesday. 'We are grateful to each clinical trial participant, their families, the investigators, and the patient advocacy groups involved in the journey towards making GOMEKLI available in the U.S.,' Islam added. 'I am proud that we are delivering on our commitment to patients with devastating diseases with our company's second FDA approval in less than 18 months.' Copyright 2025 Nexstar Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

SpringWorks Therapeutics Announces FDA Approval of GOMEKLI™ (mirdametinib) for the Treatment of Adult and Pediatric Patients with NF1-PN
SpringWorks Therapeutics Announces FDA Approval of GOMEKLI™ (mirdametinib) for the Treatment of Adult and Pediatric Patients with NF1-PN

Yahoo

time11-02-2025

  • Business
  • Yahoo

SpringWorks Therapeutics Announces FDA Approval of GOMEKLI™ (mirdametinib) for the Treatment of Adult and Pediatric Patients with NF1-PN

GOMEKLI™ (mirdametinib) capsules and tablets for oral suspension Saqib Islam, SpringWorks Therapeutics CEO SpringWorks Therapeutics, Inc GOMEKLI™ (mirdametinib) logo – GOMEKLI is the first and only medicine approved for both adults and children with NF1-PN – – Approval based on positive data from Phase 2b ReNeu trial, which showed GOMEKLI treatment resulted in robust ORR, deep and durable reductions in tumor volume, and a manageable safety profile – – SpringWorks granted rare pediatric disease priority review voucher by the FDA – Photos accompanying this announcement are available at: STAMFORD, Conn., Feb. 11, 2025 (GLOBE NEWSWIRE) -- SpringWorks Therapeutics, Inc. (Nasdaq: SWTX), a commercial-stage biopharmaceutical company focused on severe rare diseases and cancer, announced today that the U.S. Food and Drug Administration (FDA) has approved GOMEKLI™ (mirdametinib), SpringWorks' MEK inhibitor, for the treatment of adult and pediatric patients 2 years of age and older with neurofibromatosis type 1 (NF1) who have symptomatic plexiform neurofibromas (PN) not amenable to complete resection.1 With the approval, SpringWorks was granted a rare pediatric disease priority review voucher (PRV) by the FDA. 'The NF1-PN patient community has a great need for more treatment options. With today's approval, we are honored to serve both adults and children with NF1-PN and provide them with a therapy that has the potential to shrink their tumors and offer meaningful symptomatic relief,' said Saqib Islam, Chief Executive Officer of SpringWorks. 'We are grateful to each clinical trial participant, their families, the investigators, and the patient advocacy groups involved in the journey towards making GOMEKLI available in the U.S. I am proud that we are delivering on our commitment to patients with devastating diseases with our company's second FDA approval in less than 18 months.' NF1 is a genetic disorder that currently affects approximately 100,000 children and adults in the United States.2,3 Patients with NF1 have approximately a 30-50% lifetime risk of developing plexiform neurofibromas, or PNs, which are tumors that grow in an infiltrative pattern along the peripheral nerve sheath and that can cause severe disfigurement, pain and functional impairment.2,4 There are approximately 40,000 people in the United States living with NF1-PN, the majority of whom are adults that have not had an approved medicine until GOMEKLI.5 Plexiform neurofibromas can transform into malignant peripheral nerve sheath tumors, an aggressive and potentially fatal disease.6 Surgical removal can be challenging due to the infiltrative tumor growth pattern of plexiform neurofibromas along nerves, and up to approximately 85% of plexiform neurofibromas are considered not amenable to complete resection.7,8,9 'Patients with NF1-PN often face significant challenges with their health and have had limited treatment options to manage this devastating condition,' said Christopher Moertel, M.D., Medical Director Pediatric Neuro-Oncology and Neurofibromatosis Programs and Kenneth and Betty Jayne Dahlberg Professor of Pediatrics, University of Minnesota, and lead investigator of the ReNeu trial. 'It was very encouraging in the ReNeu trial to see that GOMEKLI provided deep and durable responses, with a manageable safety profile that enabled patients to stay on therapy. This approval represents an important advance, especially for adults who previously did not have an approved treatment.' GOMEKLI was approved under Priority Review and SpringWorks received a rare pediatric disease priority review voucher from the FDA. GOMEKLI was previously granted Orphan Drug and Fast Track designations for the treatment of NF1-PN. The FDA approval of GOMEKLI is based on results from the Phase 2b ReNeu trial, which enrolled 114 patients with NF1-PN ≥2 years of age (58 adults and 56 pediatric patients).10 GOMEKLI met the primary endpoint of confirmed objective response rate (ORR), as assessed by blinded independent central review, demonstrating a 41% ORR (N= 24/ 58) in adults and 52% in children (N=29/56).10 Tumor volume reductions were deep and durable; the median best percentage change in target PN volume was -41% (range: -90 to 13%) in adults and -42% (range: -91 to 48%) in children.10 Eighty-eight percent of adults and 90% of children with a confirmed response had a response of at least 12 months duration, and 50% and 48%, respectively, had a response of at least 24 months duration.10 Patients in both cohorts also experienced early and sustained significant improvements from baseline in pain, and quality of life, as assessed across multiple patient-reported outcome tools.10 GOMEKLI demonstrated a manageable safety and tolerability profile.1 The most common adverse events (>25%) reported in adults receiving GOMEKLI were rash, diarrhea, nausea, musculoskeletal pain, vomiting and fatigue.1 The most common adverse events (>25%) occurring in children were rash, diarrhea, musculoskeletal pain, abdominal pain, vomiting, headache, paronychia, left ventricular dysfunction, and nausea.1 Please see additional Important Safety Information below, including Warnings & Precautions relating to ocular toxicity, left ventricular dysfunction, dermatologic adverse reactions, and embryo-fetal toxicity.1 'We are excited to celebrate the extraordinary milestone of our partners and long-term friends at SpringWorks for the NF1-PN community. This FDA approval shows the power of collaboration to advance innovative science for drugs that may otherwise not have been taken forward,' said Annette Bakker, Ph.D., Chief Executive Officer of the Children's Tumor Foundation. "When industry, researchers, and organizations like ours driving treatment innovation join forces, scientific progress moves faster, and patients gain access to the therapies they need. Every treatment approval is hard-won, built on research, persistence, and partnership. Today, that work delivers a critical new option for NF patients of all ages.' 'NF1-PN is a complex, devastating disease that affects not only individual patients, but entire families. Treatment advances are crucial to achieving better outcomes for patients and this FDA approval offers hope for NF patients and their families,' said Kim Bischoff, Executive Director, NF Network. SpringWorks is dedicated to helping patients with NF1-PN access GOMEKLI and to providing support throughout their treatment journey. The SpringWorks CareConnections™ program is a comprehensive patient support program that offers personalized support services and resources to eligible GOMEKLI patients, including insurance coverage information and access support, financial assistance and personalized educational and emotional support. Physicians and patients can contact 1-844-CARES-55 (1-844-227-3755) or visit for more information. GOMEKLI is expected to be available through a specialty pharmacy and specialty distributor network in the United States within two weeks. SpringWorks' Marketing Authorization Application for mirdametinib for the treatment of children and adults with NF1-PN was validated by the European Medicines Agency (EMA) and is currently under review; a decision is expected from the European Commission in 2025. About NF1-PN Neurofibromatosis type 1 (NF1) is a rare genetic disorder that arises from mutations in the NF1 gene, which encodes for neurofibromin, a key suppressor of the MAPK pathway.11,12 NF1 is the most common form of neurofibromatosis, with an estimated global birth incidence of approximately 1 in 2,500 individuals, and there are approximately 100,000 patients living with NF1 in the United States.2,3 The clinical course of NF1 is heterogeneous and manifests in a variety of symptoms across numerous organ systems, including abnormal pigmentation, skeletal deformities, tumor growth and neurological complications, such as cognitive impairment.13 Patients with NF1 have an 8 to 15-year mean reduction in their life expectancy compared to the general population.14 NF1 patients have approximately a 30-50% lifetime risk of developing plexiform neurofibromas, or PN, which are tumors that grow in an infiltrative pattern along the peripheral nerve sheath and that can cause severe disfigurement, pain and functional impairment; in rare cases, NF1-PN may be fatal.2,4,6 NF1-PNs are most often diagnosed in the first two decades of life.2 These tumors can be aggressive and are associated with clinically significant morbidities; typically, they grow more rapidly during childhood.15,16 Surgical removal of these tumors can be challenging due to the infiltrative tumor growth pattern along nerves and can lead to permanent nerve damage and disfigurement.6 Up to approximately 85% of plexiform neurofibromas are considered not amenable to complete resection.7,8,9 About GOMEKLI™ (mirdametinib) GOMEKLI™ is an oral, small molecule MEK inhibitor approved in the United States for the treatment of adult and pediatric patients 2 years of age and older with neurofibromatosis type 1 (NF1) who have symptomatic plexiform neurofibromas (PN) not amenable to complete resection. IMPORTANT SAFETY INFORMATION WARNINGS AND PRECAUTIONS Ocular Toxicity: GOMEKLI can cause ocular toxicity including retinal vein occlusion (RVO), retinal pigment epithelium detachment (RPED), and blurred vision. In the adult pooled safety population, ocular toxicity occurred in 28% of patients treated with GOMEKLI: 21% were Grade 1, 5% were Grade 2 and 1.3% were Grade 3. RVO occurred in 2.7%, RPED occurred in 1.3%, and blurred vision occurred in 9% of adult patients. In the pediatric pooled safety population, ocular toxicity occurred in 19% of patients: 17% were Grade 1 and 1.7% were Grade 2. Conduct comprehensive ophthalmic assessments prior to initiating GOMEKLI, at regular intervals during treatment, and to evaluate any new or worsening visual changes such as blurred vision. Continue, withhold, reduce the dose, or permanently discontinue GOMEKLI as clinically indicated. Left Ventricular Dysfunction: GOMEKLI can cause left ventricular dysfunction. GOMEKLI has not been studied in patients with a history of clinically significant cardiac disease or LVEF <55% prior to initiation of treatment. In the ReNeu study, decreased LVEF of 10 to <20% occurred in 16% of adult patients treated with GOMEKLI. Five patients (9%) required dose interruption, one patient (1.7%) required a dose reduction, and one patient required permanent discontinuation of GOMEKLI. The median time to first onset of decreased LVEF in adult patients was 70 days. Decreased LVEF of 10 to <20% occurred in 25%, and decreased LVEF of ≥20% occurred in 1.8% of pediatric patients treated with GOMEKLI. One patient (1.8%) required dose interruption of GOMEKLI. The median time to first onset of decreased LVEF in pediatric patients was 132 days. All patients with decreased LVEF were identified during routine echocardiography, and decreased LVEF resolved in 75% of patients. Before initiating GOMEKLI, assess ejection fraction (EF) by echocardiogram. Monitor EF every 3 months during the first year and then as clinically indicated. Withhold, reduce the dose, or permanently discontinue GOMEKLI based on severity of adverse reaction. Dermatologic Adverse Reactions: GOMEKLI can cause dermatologic adverse reactions including rash. The most frequent rashes included dermatitis acneiform, rash, eczema, maculo-papular rash and pustular rash. In the pooled adult safety population, rash occurred in 92% of patients treated with GOMEKLI and required permanent discontinuation in 11% of adult patients. In the pooled pediatric safety population, rash occurred in 72% of patients treated with GOMEKLI and resulted in permanent discontinuation of GOMEKLI in 3.4% of patients. Initiate supportive care at first signs of dermatologic adverse reactions. Withhold, reduce the dose, or permanently discontinue GOMEKLI based on severity of adverse reaction. Embryo-Fetal Toxicity: GOMEKLI can cause fetal harm when administered to a pregnant woman. Verify the pregnancy status of females of reproductive potential prior to the initiation of GOMEKLI. Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Also advise patients to use effective contraception during treatment with GOMEKLI and for 6 weeks after the last dose (females) or 3 months after the last dose (males). ADVERSE REACTIONS The most common adverse reactions (>25%) in adult patients were rash (90%), diarrhea (59%), nausea (52%), musculoskeletal pain (41%), vomiting (38%), and fatigue (29%). Serious adverse reactions occurred in 17% of adult patients who received GOMEKLI. The most common Grade 3 or 4 laboratory abnormality (>2%) was increased creatine phosphokinase. The most common adverse reactions (>25%) in pediatric patients were rash (73%), diarrhea (55%), musculoskeletal pain (41%), abdominal pain (39%), vomiting (39%), headache (34%), paronychia (32%), left ventricular dysfunction (27%), and nausea (27%). Serious adverse reactions occurred in 14% of pediatric patients who received GOMEKLI. The most common Grade 3 or 4 laboratory abnormalities (>2%) were decreased neutrophil count and increased creatine phosphokinase. USE IN SPECIFIC POPULATIONS Pregnancy & Lactation. Verify the pregnancy status of patients of reproductive potential prior to initiating GOMEKLI. Due to the potential for adverse reactions in a breastfed child, advise patients not to breastfeed during treatment with GOMEKLI and for 1 week after the last dose. You are encouraged to report negative side effects of prescription drugs to the FDA. To report suspected adverse reactions, contact SpringWorks Therapeutics at 1-888-400-SWTX (1-888-400-7989) or FDA at 1-800-FDA-1088 or About SpringWorks Therapeutics SpringWorks is a commercial-stage biopharmaceutical company dedicated to improving the lives of patients with severe rare diseases and cancer. We developed and are commercializing OGSIVEO® (nirogacestat) as the first and only FDA-approved medicine for adults with desmoid tumors and GOMEKLI™ (mirdametinib) as the first and only FDA-approved medicine for both adults and children with neurofibromatosis type 1 associated plexiform neurofibromas (NF1-PN). We are also advancing a diverse portfolio of novel targeted therapy product candidates for patients with both solid tumors and hematological cancers. For more information, visit and follow @SpringWorksTx on X, LinkedIn, Facebook, Instagram, and YouTube. SpringWorks Forward-Looking Statements This press release contains 'forward-looking statements' within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, relating to our business, operations, and financial conditions, including but not limited to current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development and commercialization plans, our preclinical and clinical results, the potential for GOMEKLI to become an important new treatment for adult and pediatric NF1-PN patients, expectations regarding the timing and results of the review by the EMA of the MAA for mirdametinib for the treatment of adult and pediatric NF1-PN patients, as well as relating to other future conditions. Words such as, but not limited to, 'look forward to,' 'believe,' 'expect,' 'anticipate,' 'estimate,' 'intend,' 'plan,' 'would,' 'should' and 'could,' and similar expressions or words, identify forward-looking statements. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release, including, without limitation, risks relating to: (i) the success of our commercialization efforts with respect to GOMEKLI, (ii) our limited experience as a commercial company, (iii) our ability to obtain or maintain adequate coverage and reimbursement for GOMEKLI, (iv) the success and timing of our product development activities, including the initiation and completion of our clinical trials, (v) our expectations regarding the potential clinical benefit of GOMEKLI for adult and pediatric NF1-PN patients, (vi) our expectations regarding the market potential for GOMEKLI, (vii) our expectations regarding when GOMEKLI will become available, (viii) the fact that topline or interim data from clinical studies may not be predictive of the final or more detailed results of such study or the results of other ongoing or future studies, (ix) the success and timing of our collaboration partners' ongoing and planned clinical trials, (x) the timing of our planned regulatory submissions and interactions, including the timing and outcome of decisions made by the FDA, EMA, and other regulatory authorities, investigational review boards at clinical trial sites and publication review bodies, (xi) whether FDA, EMA, or other regulatory authorities will require additional information or further studies, or may fail or refuse to approve or may delay approval of our product candidates, (xii) our ability to obtain regulatory approval of any of our product candidates or maintain regulatory approvals granted for our products, (xiii) our plans to research, discover and develop additional product candidates, (xiv) our ability to enter into collaborations for the development of new product candidates and our ability to realize the benefits expected from such collaborations, (xv) our ability to maintain adequate patent protection and successfully enforce patent claims against third parties, (xvi) the adequacy of our cash position to fund our operations through any time period indicated herein, (xvii) our ability to establish manufacturing capabilities, and our and our collaboration partners' abilities to manufacture our product candidates and scale production, and (xviii) our ability to meet any specific milestones set forth herein. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. Although we believe the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will prove to be correct. Accordingly, readers are cautioned not to place undue reliance on these forward-looking statements. For further information regarding the risks, uncertainties and other factors that may cause differences between SpringWorks' expectations and actual results, you should review the 'Risk Factors' in Item 1A of Part II of SpringWorks' Quarterly Report on Form 10-Q for the quarter ended September 30, 2024, as well as discussions of potential risks, uncertainties and other important factors in SpringWorks' subsequent filings. Contacts: MediaMedia@ InvestorsInvestors@ References GOMEKLI. Prescribing Information. SpringWorks Therapeutics, Inc. Prada C, Rangwala F, Martin L, et al. Pediatric Plexiform Neurofibromas: Impact on Morbidity and Mortality in Neurofibromatosis Type 1. J Pediatr. 2012;160(3):461-467. doi:10.1016/ Ferner R. Neurofibromatosis 1 and neurofibromatosis 2: a twenty first century perspective. The Lancet Neurology. 2007;6(4):340-351. doi:10.1016/s1474-4422(07)70075-3. Miller DT, et al. Health supervision for children with neurofibromatosis Type 1. Pediatrics. 2019;143(5):e20190660. Data on File. Kamaludin, Siti Nurhazwani et al. 'Plexiform neurofibromatosis with peripheral malignant nerve sheath tumor and scoliosis - more surveillance imaging needed?.' Radiology case reports vol. 17,7 2388-2393. 6 May. 2022, doi:10.1016/ Needle M, Cnaan A, Dattilo J, et al. Prognostic signs in the surgical management of plexiform neurofibroma: The Children's Hospital of Philadelphia experience, 1974-1994. J Pediatr. 1997;131(5):678-682. doi:10.1016/s0022-3476(97)70092-1. Ejerskov, C., Farholt, S., Nielsen, F.S.K. et al. Clinical Characteristics and Management of Children and Adults with Neurofibromatosis Type 1 and Plexiform Neurofibromas in Denmark: A Nationwide Study. Oncol Ther 11, 97–110 (2023). Wolkenstein, P. et al. (2023) 'French cohort of children and adolescents with neurofibromatosis type 1 and symptomatic inoperable plexiform neurofibromas: Cassiopea study', European Journal of Medical Genetics, 66(5), p. 104734. doi:10.1016/ Moertel CL, Fisher MJ, Weiss BD, et al. ReNeu: A pivotal, Phase IIb trial of mirdametinib in adults and children with symptomatic neurofibromatosis type 1-associated plexiform neurofibroma. J Clin Oncol. 2024;JCO.24.01034. Yap YS, McPherson JR, Ong CK, et al. The NF1 gene revisited - from bench to bedside. Oncotarget. 2014;5(15):5873-5892. doi:10.18632/oncotarget.2194. Rasmussen S, Friedman J. NF1 Gene and Neurofibromatosis 1. Am J Epidemiol. 2000;151(1):33-40. doi:10.1093/ Weiss BD, Wolters PL, Plotkin SR, et al. NF106: A neurofibromatosis clinical trials consortium Phase II trial of the MEK inhibitor mirdametinib (PD-0325901) in adolescents and adults with NF1-related plexiform neurofibromas. J Clin Onc. 2021; 1200/JCO.20.02220. Lee: Lee TJ, et al. Incidence and prevalence of neurofibromatosis type 1 and 2: a systematic review and meta-analysis. Orphanet J Rare Dis. 2023;18(1):292. doi:10.1186/s13023-023-02911-2. Gross A, Singh G, Akshintala S, et al. Association of plexiform neurofibroma volume changes and development of clinical morbidities in neurofibromatosis 1. Neuro Oncol. 2018;20(12):1643-1651. doi:10.1093/neuonc/noy067. Nguyen R, Dombi E, Widemann B, et al. Growth dynamics of plexiform neurofibromas: a retrospective cohort study of 201 patients with neurofibromatosis 1. Orphanet J Rare Dis. 2012;7(1):75. doi:10.1186/ in to access your portfolio

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