NM_001040023.2:c.220C>G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001040023.2(SIRPA):c.220C>G(p.Pro74Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,611,398 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P74S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., cov: 27)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

SIRPA
NM_001040023.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.684

Publications

1 publications found

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 was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2833391).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001040023.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SIRPA	NM_001040023.2	MANE Select	c.220C>G	p.Pro74Ala	missense	Exon 2 of 8	NP_001035112.1	P78324-1
SIRPA	NM_001330728.1		c.220C>G	p.Pro74Ala	missense	Exon 3 of 9	NP_001317657.1	P78324-2
SIRPA	NM_001040022.1		c.220C>G	p.Pro74Ala	missense	Exon 3 of 9	NP_001035111.1	P78324-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SIRPA	ENST00000358771.5	TSL:1 MANE Select	c.220C>G	p.Pro74Ala	missense	Exon 2 of 8	ENSP00000351621.4	P78324-1
SIRPA	ENST00000356025.7	TSL:1	c.220C>G	p.Pro74Ala	missense	Exon 3 of 9	ENSP00000348307.3	P78324-1
SIRPA	ENST00000400068.7	TSL:1	c.220C>G	p.Pro74Ala	missense	Exon 3 of 9	ENSP00000382941.4	P78324-1

Frequencies

GnomAD3 genomes

AF:

0.0000267

AC:

AN:

149920

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000491

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000203

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000120

AC:

AN:

250122

AF XY:

0.0000222

show subpopulations

Gnomad AFR exome

AF:

0.000124

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000547

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461478

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727030

show subpopulations

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

African (AFR)

AF:

0.0000896

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.00

AC:

AN:

86234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111674

Other (OTH)

AF:

0.00

AC:

AN:

60372

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000100134), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.363

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000267

AC:

AN:

149920

Hom.:

Cov.:

AF XY:

0.0000411

AC XY:

AN XY:

72962

show subpopulations

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

African (AFR)

AF:

0.0000491

AC:

AN:

40746

American (AMR)

AF:

0.00

AC:

AN:

14934

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3458

East Asian (EAS)

AF:

0.000203

AC:

AN:

4934

South Asian (SAS)

AF:

0.00

AC:

AN:

4632

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10354

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000148

AC:

AN:

67590

Other (OTH)

AF:

0.00

AC:

AN:

2050

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000232629), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.0000165

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.49

CADD

Benign

(source)

DANN

Benign

0.92

DEOGEN2

Benign

0.39

Eigen

Benign

-0.64

Eigen_PC

Benign

-0.70

FATHMM_MKL

Benign

0.065

LIST_S2

Benign

0.57

M_CAP

Benign

0.0050

MetaRNN

Benign

0.28

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.1

PhyloP100

0.68

PrimateAI

Benign

0.24

PROVEAN

Pathogenic

-5.0

REVEL

Benign

0.12

Sift

Uncertain

0.024

Sift4G

Uncertain

0.040

Polyphen

0.0050

Vest4

0.32

MVP

0.37

MPC

0.52

ClinPred

0.043

GERP RS

3.1

Varity_R

0.44

gMVP

0.23

Mutation Taster

=94/6

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over