chr9-133256050-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BA1

The ENST00000538324.2(ABO):​c.678G>A​(p.Pro226=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.238 in 1,584,234 control chromosomes in the GnomAD database, including 47,228 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in Lovd as Benign (no stars).

Frequency

Genomes: 𝑓 0.22 ( 4250 hom., cov: 33)
Exomes 𝑓: 0.24 ( 42978 hom. )

Consequence

ABO
ENST00000538324.2 synonymous

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.34
Variant links:
Genes affected
ABO (HGNC:79): (ABO, alpha 1-3-N-acetylgalactosaminyltransferase and alpha 1-3-galactosyltransferase) This gene encodes proteins related to the first discovered blood group system, ABO. Variation in the ABO gene (chromosome 9q34.2) is the basis of the ABO blood group, thus the presence of an allele determines the blood group in an individual. The 'O' blood group is caused by a deletion of guanine-258 near the N-terminus of the protein which results in a frameshift and translation of an almost entirely different protein. Individuals with the A, B, and AB alleles express glycosyltransferase activities that convert the H antigen into the A or B antigen. Other minor alleles have been found for this gene. [provided by RefSeq, Apr 2022]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.86).
BP6
Variant 9-133256050-C-T is Benign according to our data. Variant chr9-133256050-C-T is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=-1.34 with no splicing effect.
BA1
GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.362 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ABONM_020469.3 linkuse as main transcriptc.678G>A p.Pro226= synonymous_variant 8/8 NP_065202.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ABOENST00000538324.2 linkuse as main transcriptc.678G>A p.Pro226= synonymous_variant 8/95 ENSP00000483018 A2

Frequencies

GnomAD3 genomes
AF:
0.223
AC:
33859
AN:
151818
Hom.:
4245
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.147
Gnomad AMI
AF:
0.102
Gnomad AMR
AF:
0.369
Gnomad ASJ
AF:
0.275
Gnomad EAS
AF:
0.267
Gnomad SAS
AF:
0.210
Gnomad FIN
AF:
0.179
Gnomad MID
AF:
0.241
Gnomad NFE
AF:
0.240
Gnomad OTH
AF:
0.229
GnomAD3 exomes
AF:
0.245
AC:
49369
AN:
201662
Hom.:
7081
AF XY:
0.234
AC XY:
25628
AN XY:
109470
show subpopulations
Gnomad AFR exome
AF:
0.136
Gnomad AMR exome
AF:
0.458
Gnomad ASJ exome
AF:
0.269
Gnomad EAS exome
AF:
0.244
Gnomad SAS exome
AF:
0.196
Gnomad FIN exome
AF:
0.171
Gnomad NFE exome
AF:
0.218
Gnomad OTH exome
AF:
0.239
GnomAD4 exome
AF:
0.239
AC:
342966
AN:
1432298
Hom.:
42978
Cov.:
78
AF XY:
0.237
AC XY:
168124
AN XY:
710358
show subpopulations
Gnomad4 AFR exome
AF:
0.139
Gnomad4 AMR exome
AF:
0.447
Gnomad4 ASJ exome
AF:
0.277
Gnomad4 EAS exome
AF:
0.255
Gnomad4 SAS exome
AF:
0.201
Gnomad4 FIN exome
AF:
0.175
Gnomad4 NFE exome
AF:
0.239
Gnomad4 OTH exome
AF:
0.245
GnomAD4 genome
AF:
0.223
AC:
33872
AN:
151936
Hom.:
4250
Cov.:
33
AF XY:
0.223
AC XY:
16581
AN XY:
74258
show subpopulations
Gnomad4 AFR
AF:
0.147
Gnomad4 AMR
AF:
0.370
Gnomad4 ASJ
AF:
0.275
Gnomad4 EAS
AF:
0.267
Gnomad4 SAS
AF:
0.209
Gnomad4 FIN
AF:
0.179
Gnomad4 NFE
AF:
0.240
Gnomad4 OTH
AF:
0.227
Alfa
AF:
0.239
Hom.:
6252
Bravo
AF:
0.237
Asia WGS
AF:
0.256
AC:
889
AN:
3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.86
CADD
Benign
1.1
DANN
Benign
0.72
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1

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.

Other links and lift over

dbSNP: rs8176742; hg19: chr9-136131437; COSMIC: COSV71743415; API