Expanding the genetic landscape of SLC4A1-linked hereditary spherocytosis: discovery of a novel TM9 variant using high-resolution genomic profiling analysis.

Seven SLC4A1 variants, including a novel p.Phe702Ser in TM9, were identified in Indian hereditary spherocytosis patients, expanding the mutation spectrum.

• Why it matters: Understanding genetic diversity in HS is crucial for accurate diagnosis and personalized treatment, especially in populations with unique mutational profiles like Indians.
• What they did: Researchers used targeted next-generation sequencing on seven patients, validated variants with Sanger sequencing, and assessed structural impacts with in silico tools, discovering six known and one novel mutation.
• The result: The novel p.Phe702Ser variant likely destabilizes AE1, impairing function, and the findings reveal phenotypic variability despite similar genotypes, aiding future diagnostics and therapies.