The abstract is read at the publisher; the summary is JClub's.
A P2RX2 exon-2 complex indel (NM_174873: c.278_288delinsACGTGAAGCCCCC) in a Han Chinese family disrupts splicing and markedly reduces P2X2 protein output.
- Why it matters: DFNA41 hearing loss shows progressive severity and acoustic-therapy susceptibility, but the specific functional effects of truncating or splice-altering P2RX2 variants are not well defined.
- What they did: The team used a targeted hearing-loss gene panel with segregation in a Han Chinese family, then tested the reconstructed exon-2 indel with a pcMINI-C minigene assay plus RT-qPCR and Western blotting in heterologous cells.
- The result: The indel drove cryptic splice usage producing two frameshifted isoforms with premature termination codons, linked to reduced steady-state mRNA and markedly reduced P2X2 output, supporting loss-of-function and haploinsufficiency and highlighting variable expressivity within the family.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.