Genetic Variant GYPA:p.Gly102Ala (chr4-144116906-C-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2

The NM_002099.8(GYPA):c.305G>C(p.Gly102Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000251 in 1,595,554 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/19 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. G102D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

GYPA
NM_002099.8 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.16

Variant links:

Genes affected

GYPA (HGNC:4702): (glycophorin A (MNS blood group)) Glycophorins A (GYPA) and B (GYPB) are major sialoglycoproteins of the human erythrocyte membrane which bear the antigenic determinants for the MN and Ss blood groups. In addition to the M or N and S or s antigens that commonly occur in all populations, about 40 related variant phenotypes have been identified. These variants include all the variants of the Miltenberger complex and several isoforms of Sta, as well as Dantu, Sat, He, Mg, and deletion variants Ena, S-s-U- and Mk. Most of the variants are the result of gene recombinations between GYPA and GYPB. [provided by RefSeq, Jul 2008]

GYPA links:

ENSG00000285783 (HGNC:):

ENSG00000285783 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM1

In a mutagenesis_site Abolishes dimerization. (size 0) in uniprot entity GLPA_HUMAN

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GYPA	NM_002099.8 link	c.305G>C	p.Gly102Ala	missense_variant	Exon 5 of 7	ENST00000641688.3	NP_002090.4	P02724A0A0C4DFT7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GYPA	ENST00000641688.3 link	c.305G>C	p.Gly102Ala	missense_variant	Exon 5 of 7		NM_002099.8	ENSP00000493142.2		A0A0C4DFT7

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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

GnomAD4 exome

AF:

6.93e-7

AC:

AN:

1443428

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

719502

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:

0.00

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74316

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.41

CADD

Benign

0.47

DANN

Benign

0.95

DEOGEN2

Benign

0.13

.;T;T;.;.;.;.;.;.;T;T;.;.;.

Eigen

Benign

-0.97

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.017

LIST_S2

Benign

0.71

T;.;T;T;T;.;.;T;T;T;T;T;T;T

M_CAP

Benign

0.0088

MetaRNN

Uncertain

0.74

D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.78

PrimateAI

Benign

0.29

PROVEAN

Uncertain

-3.6

.;.;D;.;D;.;.;.;.;.;D;D;D;D

REVEL

Benign

0.20

Sift

Uncertain

0.013

.;.;D;.;D;.;.;.;.;.;D;D;D;D

Sift4G

Benign

0.29

T;.;T;.;T;.;T;.;.;.;T;T;T;T

Polyphen

0.81, 0.34

.;.;.;.;.;.;.;.;.;.;P;B;P;.

Vest4

0.31

MutPred

0.84

.;Gain of helix (P = 0.2294);Gain of helix (P = 0.2294);Gain of helix (P = 0.2294);.;.;.;.;.;.;.;.;.;.;

MVP

0.32

MPC

0.13

ClinPred

0.83

GERP RS

-3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

gMVP

0.028

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over