Variant chr20-38902770-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_015568.4(PPP1R16B):c.674T>C(p.Ile225Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PPP1R16B
NM_015568.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.41

Variant links:

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]

PPP1R16B links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.073088616).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PPP1R16B	NM_015568.4 linkuse as main transcript	c.674T>C	p.Ile225Thr	missense_variant	6/11	ENST00000299824.6
PPP1R16B	NM_001172735.3 linkuse as main transcript	c.674T>C	p.Ile225Thr	missense_variant	6/10
PPP1R16B	XM_011528768.4 linkuse as main transcript	c.686T>C	p.Ile229Thr	missense_variant	5/10
PPP1R16B	XM_047440086.1 linkuse as main transcript	c.77T>C	p.Ile26Thr	missense_variant	2/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PPP1R16B	ENST00000299824.6 linkuse as main transcript	c.674T>C	p.Ile225Thr	missense_variant	6/11	1	NM_015568.4	P1	Q96T49-1
PPP1R16B	ENST00000373331.2 linkuse as main transcript	c.674T>C	p.Ile225Thr	missense_variant	6/10	5			Q96T49-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 02, 2024

The c.674T>C (p.I225T) alteration is located in exon 6 (coding exon 5) of the PPP1R16B gene. This alteration results from a T to C substitution at nucleotide position 674, causing the isoleucine (I) at amino acid position 225 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.059

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.50

CADD

Benign

DANN

Benign

0.84

DEOGEN2

Benign

0.058

T;.

Eigen

Benign

-0.11

Eigen_PC

Benign

0.029

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.82

T;T

M_CAP

Benign

0.0034

MetaRNN

Benign

0.073

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-1.4

N;N

MutationTaster

Benign

0.99

N;N

PrimateAI

Benign

0.43

PROVEAN

Benign

1.3

N;N

REVEL

Benign

0.12

Sift

Benign

0.55

T;T

Sift4G

Benign

0.55

T;T

Polyphen

0.0

B;.

Vest4

0.12

MutPred

0.56

Loss of stability (P = 0.0038);Loss of stability (P = 0.0038);

MVP

0.13

MPC

0.57

ClinPred

0.25

GERP RS

3.0

Varity_R

0.024

gMVP

0.16

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

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over