- Mar 2021
Results for individual PALB2 variants were normalized relative to WT-PALB2 and the p.Tyr551ter (p.Y551X) truncating variant on a 1:5 scale with the fold change in GFP-positive cells for WT set at 5.0 and fold change GFP-positive cells for p.Y551X set at 1.0. The p.L24S (c.71T>C), p.L35P (c.104T>C), p.I944N (c.2831T>A), and p.L1070P (c.3209T>C) variants and all protein-truncating frame-shift and deletion variants tested were deficient in HDR activity, with normalized fold change <2.0 (approximately 40% activity) (Fig. 1a).
A total of 84 PALB2 patient-derived missense variants reported in ClinVar, COSMIC, and the PALB2 LOVD database were selected
HGVS: NM_024675.3:c.3494C>T p.(Ser1165Leu)
Most Suspected Brugada Syndrome Variants Had (Partial) Loss of Function
Comment: This variant had a mild loss of function in peak current (50-75% of wildtype). It had unmeasured late current, but has been previously reported to have high late current (GOF feature). Therefore it was considered to meet neither the abnormal or normal functional parameter. (Personal communication: A. Glazer)
we selected 73 previously unstudied variants: 63 suspected Brugada syndrome variants and 10 suspected benign variants
HGVS: NM_198056.2:c.5350G>A p.(Glu1784Lys)