rs687621

Variant names:

• chr9-133261662-G-A
• rs687621
• ENST00000611156.4:c.99-288C>T

Your query was ambiguous. Multiple possible variants found:

• chr9-133261662-G-A
• chr9-133261662-G-C
• chr9-133261662-G-T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000611156.4(ABO):​c.99-288C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.62 in 152,004 control chromosomes in the GnomAD database, including 29,577 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.62 (29577 hom., cov: 32)
• Consequence: ABO ENST00000611156.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.425
• Publications: 118 publications found

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]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (Cadd=2.724).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.706 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000611156.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABO	NR_198898.1		n.111-288C>T		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABO	ENST00000611156.4	TSL:5	c.99-288C>T		intron	N/A	ENSP00000483265.1	A0A087X0C2
	ABO	ENST00000453660.4	TSL:1	n.129-288C>T		intron	N/A
	ABO	ENST00000538324.2	TSL:5	c.99-288C>T		intron	N/A	ENSP00000483018.1	A0A087X009

Frequencies

GnomAD3 genomes AF: 0.620 AC: 94229 AN: 151886 Hom.: 29552 Cov.: 32

Gnomad AFR AF: 0.565

Gnomad AMI AF: 0.351

Gnomad AMR AF: 0.717

Gnomad ASJ AF: 0.566

Gnomad EAS AF: 0.607

Gnomad SAS AF: 0.560

Gnomad FIN AF: 0.539

Gnomad MID AF: 0.652

Gnomad NFE AF: 0.656

Gnomad OTH AF: 0.629

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.620 AC: 94292 AN: 152004 Hom.: 29577 Cov.: 32 AF XY: 0.618 AC XY: 45907 AN XY: 74308

African (AFR) AF: 0.565 AC: 23408 AN: 41452

American (AMR) AF: 0.717 AC: 10951 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.566 AC: 1965 AN: 3470

East Asian (EAS) AF: 0.607 AC: 3129 AN: 5152

South Asian (SAS) AF: 0.560 AC: 2705 AN: 4828

European-Finnish (FIN) AF: 0.539 AC: 5699 AN: 10574

Middle Eastern (MID) AF: 0.667 AC: 196 AN: 294

European-Non Finnish (NFE) AF: 0.656 AC: 44588 AN: 67934

Other (OTH) AF: 0.631 AC: 1332 AN: 2112

Alfa AF: 0.642 Hom.: 95921

Bravo AF: 0.634

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
CADD	Benign	2.7
PhyloP100		0.42

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs687621;