3 years ago

Case Report: Whole exome sequencing identifies variation c.2308G>A p.E770K in RAG1 associated with B- T- NK+ severe combined immunodeficiency [version 2; referees: 2 approved, 1 not approved]

Geeta Madathil Govindaraj, Rajeevan Kunnaruvath, Ankit Verma, Revathi Raj, Riyaz Arakkal, Rowmika Ravi, Sridhar Sivasubbu, Shamsudheen Karuthedath Vellarikkal, Vinod Scaria, Machinari Puthenpurayil Jayakrishnan, Krishnan Chakkiyar, Rijith Jayarajan
Severe combined immunodeficiency is a large clinically heterogeneous group of disorders caused by a defect in the development of humoral or cellular immune responses. At least 13 genes are known to be involved in the pathophysiology of the disease and the mutation spectrum in SCID has been well documented. Mutations of the recombination-activating genes RAG 1 and RAG 2 are associated with a range of clinical presentations including, severe combined immunodeficiency and autoimmunity. Recently, our understanding of the molecular basis of immune dysfunction in RAG deficiency has improved tremendously with newer insights into the ultrastructure of the RAG complex. In this report, we describe the application of whole exome sequencing for arriving at a molecular diagnosis in a child suffering from B- T- NK+ severe combined immunodeficiency. Apart from making the accurate molecular diagnosis, we also add a genetic variation c.2308G>A p.E770K to the compendium of variations associated with the disease.

Publisher URL: https://f1000research.com/articles/5-2532/v2

DOI: 10.12688/f1000research.9473.2

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