X-111147758-C-A

Variant names:

• chrX-111147758-C-A
• rs780775497
• NM_002578.5:c.298C>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_002578.5(PAK3):​c.298C>A​(p.Arg100Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: PAK3 NM_002578.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.48
• Publications: 2 publications found

Genes affected

PAK3 (HGNC:8592): (p21 (RAC1) activated kinase 3) The protein encoded by this gene is a serine-threonine kinase and forms an activated complex with GTP-bound RAS-like (P21), CDC2 and RAC1. This protein may be necessary for dendritic development and for the rapid cytoskeletal reorganization in dendritic spines associated with synaptic plasticity. Defects in this gene are the cause of a non-syndromic form of X-linked intellectual disability. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2017]

PAK3 Gene-Disease associations (from GenCC):

• corpus callosum, agenesis of

  Inheritance: XL Classification: DEFINITIVE Submitted by: G2P
• intellectual disability, X-linked 30

  Inheritance: XL Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• X-linked syndromic intellectual disability

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
• non-syndromic X-linked intellectual disability

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.32).
• BP7: Synonymous conserved (PhyloP=2.48 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PAK3	NM_002578.5	c.298C>A	p.Arg100Arg	synonymous_variant	Exon 7 of 18	ENST00000372007.10	NP_002569.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PAK3	ENST00000372007.10	c.298C>A	p.Arg100Arg	synonymous_variant	Exon 7 of 18	1	NM_002578.5	ENSP00000361077.4

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1091284 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 357196

African (AFR) AF: 0.00 AC: 0 AN: 26262

American (AMR) AF: 0.00 AC: 0 AN: 35198

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19339

East Asian (EAS) AF: 0.00 AC: 0 AN: 30165

South Asian (SAS) AF: 0.00 AC: 0 AN: 53986

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40522

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4122

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 835832

Other (OTH) AF: 0.00 AC: 0 AN: 45858

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.32
CADD	Benign	8.2
DANN	Benign	0.59
PhyloP100		2.5

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs780775497; hg19: chrX-110390986;