chr20-38907833-T-C

Variant names:

• chr20-38907833-T-C
• rs539737419
• NM_015568.4:c.926T>C

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_015568.4(PPP1R16B):​c.926T>C​(p.Val309Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000867 in 1,614,142 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000089 (0 hom.)
• Consequence: PPP1R16B NM_015568.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.88
• Publications: 0 publications found

Genes affected

PPP1R16B (HGNC:15850): (protein phosphatase 1 regulatory subunit 16B) The protein encoded by this gene is membrane-associated and contains five ankyrin repeats, a protein phosphatase-1-interacting domain, and a carboxy-terminal CAAX box domain. Synthesis of the encoded protein is inhibited by transforming growth factor beta-1. The protein may bind to the membrane through its CAAX box domain and may act as a signaling molecule through interaction with protein phosphatase-1. Alternative splicing results in multiple transcript variants encoding different isoforms that may undergo similar processing to generate mature protein. [provided by RefSeq, Sep 2015]

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.01976797).
• BS2: High AC in GnomAdExome4 at 13 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015568.4. 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
	PPP1R16B	NM_015568.4	MANE Select	c.926T>C	p.Val309Ala	missense	Exon 9 of 11	NP_056383.1	Q96T49-1
	PPP1R16B	NM_001172735.3		c.800T>C	p.Val267Ala	missense	Exon 8 of 10	NP_001166206.1	Q96T49-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PPP1R16B	ENST00000299824.6	TSL:1 MANE Select	c.926T>C	p.Val309Ala	missense	Exon 9 of 11	ENSP00000299824.1	Q96T49-1
	PPP1R16B	ENST00000969166.1		c.944T>C	p.Val315Ala	missense	Exon 9 of 11	ENSP00000639225.1
	PPP1R16B	ENST00000969164.1		c.926T>C	p.Val309Ala	missense	Exon 9 of 11	ENSP00000639223.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152174 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000398 AC: 10 AN: 251462 AF XY: 0.0000515

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000889 AC: 13 AN: 1461850 Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9 AN XY: 727224

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.000327 AC: 13 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5758

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111984

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152292 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74478

African (AFR) AF: 0.00 AC: 0 AN: 41550

American (AMR) AF: 0.00 AC: 0 AN: 15300

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.0000330 AC: 4

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions as Germline

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	Uncertain	0.35
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	19
DANN	Benign	0.55
DEOGEN2	Benign	0.065	T
Eigen	Benign	-0.51
Eigen_PC	Benign	-0.22
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Benign	0.81	T
M_CAP	Benign	0.0089	T
MetaRNN	Benign	0.020	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.11	N
PhyloP100		2.9
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	1.2	N
REVEL	Benign	0.074
Sift	Benign	1.0	T
Sift4G	Benign	1.0	T
Polyphen		0.0040	B
Vest4		0.15
MutPred		0.30		Loss of methylation at K308 (P = 0.0408)
MVP		0.22
MPC		0.55
ClinPred		0.039	T
GERP RS		4.9
Varity_R		0.054
gMVP		0.26
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: rs539737419; hg19: chr20-37536476;