Gujarat to create genome database of tribal communities: what's the project, why
The entire eastern belt of Gujarat, which shares borders with Rajasthan in the north, Madhya Pradesh in the east and Maharashtra in the south, has districts with a predominantly tribal population.
The Genome India Project — its report was released by Prime Minister Narendra Modi in January — saw 10,000 genomes from 83 diverse groups processed and stored at the Indian Biological Data Centre. It had around 1,800 samples from Gujarat, which included around 100 samples from tribal communities, not enough to represent them.
Thus, the Gujarat Tribal Genome Sequencing Project aims to gain critical insight into the genetic makeup of these tribal groups, which, at 15% of the state's population, consist of approximately 1 crore people. This initiative is also expected to enrich the Central Genome India dataset.
The project, approved in the Gujarat budget of 2025-26, will be helmed by the Gujarat Biotechnology Research Centre (GBRC).
Implications of the project
Mona Khandhar, Principal Secretary, Department of Science and Technology, said the understanding of genome characteristics will help the government in making more focused programmes.
Subject enrollment will take place after a formal launch of the project by Chief Minister Bhupendra Patel, so that awareness begins before field researchers go to the villages. 'Our field teams will seek help from the local administration, communities, as well as the political leadership. This is why it was important to explain the project to MPs and MLAs. We are also taking help from researchers at Birsa Munda Bhavan and the Tribal Development Department,' said a scientist involved in the project.
The project's six-point agenda includes capturing the unique diversity of India's population, improving diagnosis of rare diseases, supporting development of novel drugs, developing precision medical treatments tailored to genetic profiles, building a genomic reference panel for the tribal population, and boosting public health research infrastructure.
Many among the tribal communities from Gujarat have excelled in sports. Director of GBRC Prof Chaitanya Joshi said, 'These tribes can be very good in, say, archery, or skills other communities may not have. So what are the genes associated with that? With this project, skill sets associated with genes can be identified.'
Health aspect
Health problems like malnutrition, anaemia, low BMI, prevalence of genetic diseases like sickle cell anaemia, G6PD deficiency are common in the tribal communities in Gujarat.
Scientist and Joint Director at the GBRC Amrutlal K Patel said, 'So far, the medicines developed have been studied on the western population and we haven't explored the Indian genome. Diseases are more prevalent in specific communities and ethnicity also due to the Indian tradition of endogamy, as a result of which genome variations are conserved within castes.'
Patel gave an example of how deaths due to organ failure were reported in certain tribes when they crossed 30 years of age. Two years ago, the GBRC researched some patients and their first degree family members, and found this was due to the mutation of the transthyretin (TTR) gene, resulting in the aggregation of protein that reached the organs, causing failure.
Some mutations increase the chances of a disease, for instance BRCA1 and 2 genes in breast cancer. These are generally detected after 50 years of age and after tests. 'We can identify these in advance and design a policy that can prevent the prevalence of breast cancer. All these measures decline the disease burden on the community and thus the state government,' a scientist said.
The process
As part of this project, scientists will collect samples from 4,158 individuals from various tribal communities, including data on their physical measurements and blood biochemistry, and create a 2,000-strong diverse database of tribal genomes. 'We will genotype the samples and remove those that are genetically close to each other. Out of 4,158, we will do SNP (Single Nucleotide Polymorphisms) type genotyping and take those with the most diverse genetics. The precaution is also because there might be bias during sample collection, which can then be eliminated at the analysis stage,' an official said.
Of these, 378 will be trio samples. This means that samples will be taken of three members of the same family, including an individual as well as his/her biological parents. The other 3,780 will be individual samples.
Apart from blood samples, stool samples will also be collected for microbial information.
The role of the tribal department, according to Shahmeena Husain, principal secretary, will be to facilitate the technical team. 'We will facilitate the technical team as it will be a task to convince people to give samples.'
Apart from name, education, medical history, information collected would include genealogical tree and addictions, physical characteristics like height, weight, BP, blood sugar, and waist measurement.
The analysis
After the samples have been collected, they will be stored at GBRC, where haematological and biochemical analysis of blood samples will take place.
'First, when the samples come from the field to the lab in Gandhinagar, they will be given Unique IDs. So those who receive the samples will neither know the gender nor the tribe of the person whose sample they are running through the process. This first round of encryption will be stored in our servers. Then, when it goes into the final process of Whole Genome Sequencing (WGS), the data will be encrypted for the second time,' said a researcher close to the project.
Joshi said Odisha and Madhya Pradesh, which have 22% and 21% tribal population respectively, have shown interest in the project. 'Modalities on whether they want to be a part of it or contribute to it will be decided by the state, but if they approach us, we are ready.'
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