Finding the genetic roots of rare cancers is incredibly hard because there are so few patients to study. This research combined data from over 480,000 people across cancer centers and a population biobank to hunt for clues. The team found several new genetic spots linked to a higher risk for cancers like myelodysplastic syndromes, gastrointestinal stromal tumors, and non-melanoma skin cancer.
For example, one genetic change near the API5 gene raised the risk of myelodysplastic syndromes, while another near SLC6A18 and TERT was tied to gastrointestinal stromal tumors. The study also found that a risk variant for these tumors was more common in tumors with a specific KIT mutation and was linked to worse survival. Another variant was tied to a higher chance of HPV infection in anal cancer.
This work involved people from two clinical cancer cohorts and a population biobank. It's important to remember these are associations from observational data, not proof that these genes cause cancer. The findings are early and need more validation, but they give researchers a clearer path to understanding these rare diseases.