Case report with biallelic variants in GCNT2 implicates exon 1B in congenital cataracts

Date:
Thursday, Mar 12, 2026 10:30am – 11:30am
Conference:
ACMG 2026
Authors:
Audrey O’Neill, Cindy Bayer, Dallas Reed, Emily McQuillen, Erica Smith, Meghan Towne

Presenting Author: Audrey O’Neill, PhD

Take home points: 

  1. This is the first report of a disease-associated variant limited to exon 1B of GCNT2.
  2. This case, in combination with other supportive evidence, strongly implicates isoform B (NM_001491.3 ) as a clinically relevant transcript for congenital cataracts.