Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong
The NM_001164161.2(PPP6R3):c.1436C>T(p.Ala479Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,284 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
PPP6R3 (HGNC:1173): (protein phosphatase 6 regulatory subunit 3) Protein phosphatase regulatory subunits, such as SAPS3, modulate the activity of protein phosphatase catalytic subunits by restricting substrate specificity, recruiting substrates, and determining the intracellular localization of the holoenzyme. SAPS3 is a regulatory subunit for the protein phosphatase-6 catalytic subunit (PPP6C; MIM 612725) (Stefansson and Brautigan, 2006 [PubMed 16769727]).[supplied by OMIM, Nov 2010]
Uncertain significance, criteria provided, single submitter
clinical testing
Ambry Genetics
Sep 27, 2022
The c.1436C>T (p.A479V) alteration is located in exon 13 (coding exon 11) of the PPP6R3 gene. This alteration results from a C to T substitution at nucleotide position 1436, causing the alanine (A) at amino acid position 479 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
Loss of ubiquitination at K474 (P = 0.0837);.;Loss of ubiquitination at K474 (P = 0.0837);Loss of ubiquitination at K474 (P = 0.0837);Loss of ubiquitination at K474 (P = 0.0837);Loss of ubiquitination at K474 (P = 0.0837);.;.;Loss of ubiquitination at K474 (P = 0.0837);.;