rs779049415

Variant names:

• chr7-94910925-C-T
• rs779049415
• NM_001166160.2:c.812C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001166160.2(PPP1R9A):​c.812C>T​(p.Ala271Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PPP1R9A NM_001166160.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.41
• Publications: 0 publications found

Genes affected

PPP1R9A (HGNC:14946): (protein phosphatase 1 regulatory subunit 9A) This gene is imprinted, and located in a cluster of imprinted genes on chromosome 7q12. This gene is transcribed in both neuronal and multiple embryonic tissues, and it is maternally expressed mainly in embryonic skeletal muscle tissues and biallelically expressed in other embryonic tissues. The protein encoded by this gene includes a PDZ domain and a sterile alpha motif (SAM). It is a regulatory subunit of protein phosphatase I, and controls actin cytoskeleton reorganization. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09777969).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001166160.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PPP1R9A	NM_001166160.2	MANE Select	c.812C>T	p.Ala271Val	missense	Exon 2 of 20	NP_001159632.1	Q9ULJ8-3
	PPP1R9A	NM_001166161.1		c.812C>T	p.Ala271Val	missense	Exon 1 of 18	NP_001159633.1	Q9ULJ8-5
	PPP1R9A	NM_001166162.1		c.812C>T	p.Ala271Val	missense	Exon 1 of 17	NP_001159634.1	Q9ULJ8-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PPP1R9A	ENST00000433360.6	TSL:1 MANE Select	c.812C>T	p.Ala271Val	missense	Exon 2 of 20	ENSP00000405514.1	Q9ULJ8-3
	PPP1R9A	ENST00000289495.7	TSL:1	c.812C>T	p.Ala271Val	missense	Exon 1 of 18	ENSP00000289495.7	Q9ULJ8-5
	PPP1R9A	ENST00000456331.6	TSL:1	c.812C>T	p.Ala271Val	missense	Exon 1 of 17	ENSP00000402893.2	Q9ULJ8-4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 250954 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000882

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461812 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727196

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000299 AC: 1 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53376

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111988

Other (OTH) AF: 0.00 AC: 0 AN: 60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0385499), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.090	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.060	T
Eigen	Benign	-0.59
Eigen_PC	Benign	-0.50
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.081	D
MetaRNN	Benign	0.098	T
MetaSVM	Uncertain	-0.26	T
MutationAssessor	Benign	1.4	L
PhyloP100		1.4
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-0.16	N
REVEL	Benign	0.25
Sift	Benign	0.030	D
Sift4G	Benign	0.36	T
Polyphen		0.0010	B
Vest4		0.080
MutPred		0.067		Gain of methylation at K273 (P = 0.125)
MVP		0.65
MPC		0.16
ClinPred		0.086	T
GERP RS		2.9
Varity_R		0.033
gMVP		0.20
Mutation Taster		=91/9	polymorphism

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: rs779049415; hg19: chr7-94540237;