20-1921545-C-G

Position:

chr20-1921545-C-G

Variant summary

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

The NM_001040023.2(SIRPA):c.587C>G(p.Thr196Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,461,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

SIRPA
NM_001040023.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.252

Variant links:

Genes affected

SIRPA (HGNC:9662): (signal regulatory protein alpha) The protein encoded by this gene is a member of the signal-regulatory-protein (SIRP) family, and also belongs to the immunoglobulin superfamily. SIRP family members are receptor-type transmembrane glycoproteins known to be involved in the negative regulation of receptor tyrosine kinase-coupled signaling processes. This protein can be phosphorylated by tyrosine kinases. The phospho-tyrosine residues of this PTP have been shown to recruit SH2 domain containing tyrosine phosphatases (PTP), and serve as substrates of PTPs. This protein was found to participate in signal transduction mediated by various growth factor receptors. CD47 has been demonstrated to be a ligand for this receptor protein. This gene and its product share very high similarity with several other members of the SIRP family. These related genes are located in close proximity to each other on chromosome 20p13. Multiple alternatively spliced transcript variants have been determined for this gene. [provided by RefSeq, Jul 2008]

SIRPA links:

Genome browser will be placed here

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=0.18673748).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SIRPA	NM_001040023.2 linkuse as main transcript	c.587C>G	p.Thr196Ser	missense_variant	3/8	ENST00000358771.5	NP_001035112.1	P78324-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
SIRPA	ENST00000358771.5 linkuse as main transcript	c.587C>G	p.Thr196Ser	missense_variant	3/8	1	NM_001040023.2	ENSP00000351621.4	P78324-1
SIRPA	ENST00000356025.7 linkuse as main transcript	c.587C>G	p.Thr196Ser	missense_variant	4/9	1		ENSP00000348307.3	P78324-1
SIRPA	ENST00000400068.7 linkuse as main transcript	c.587C>G	p.Thr196Ser	missense_variant	4/9	1		ENSP00000382941.4	P78324-1
SIRPA	ENST00000622179.4 linkuse as main transcript	c.587C>G	p.Thr196Ser	missense_variant	4/9	5		ENSP00000478763.1	P78324-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251496

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135922

show subpopulations

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 SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461878

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727238

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:

0.000174

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

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

Jul 09, 2021

The c.587C>G (p.T196S) alteration is located in exon 4 (coding exon 3) of the SIRPA gene. This alteration results from a C to G substitution at nucleotide position 587, causing the threonine (T) at amino acid position 196 to be replaced by a serine (S). 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

0.14

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.18

T;.;T;T

Eigen

Benign

-0.054

Eigen_PC

Benign

-0.18

FATHMM_MKL

Benign

0.23

LIST_S2

Benign

0.80

T;T;.;.

M_CAP

Benign

0.014

MetaRNN

Benign

0.19

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;L;L;L

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-3.3

D;.;D;D

REVEL

Benign

0.083

Sift

Benign

0.081

T;.;T;T

Sift4G

Benign

0.16

T;T;T;T

Polyphen

0.93

P;D;P;P

Vest4

0.28

MutPred

0.54

Gain of disorder (P = 0.033);Gain of disorder (P = 0.033);Gain of disorder (P = 0.033);Gain of disorder (P = 0.033);

MVP

0.52

MPC

2.5

ClinPred

0.66

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.21

gMVP

0.29

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over