4-99344976-T-G

Variant names:

• chr4-99344976-T-G
• rs2241894
• NM_000669.5:c.453A>C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_000669.5(ADH1C):​c.453A>C​(p.Thr151Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 33)
• Consequence: ADH1C NM_000669.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -6.08
• Publications: 32 publications found

Genes affected

ADH1C (HGNC:251): (alcohol dehydrogenase 1C (class I), gamma polypeptide) This gene encodes class I alcohol dehydrogenase, gamma subunit, which is a member of the alcohol dehydrogenase family. Members of this enzyme family metabolize a wide variety of substrates, including ethanol, retinol, other aliphatic alcohols, hydroxysteroids, and lipid peroxidation products. Class I alcohol dehydrogenase, consisting of several homo- and heterodimers of alpha, beta, and gamma subunits, exhibits high activity for ethanol oxidation to acetaldehyde, thus playing a major role in ethanol catabolism. Three genes encoding alpha, beta and gamma subunits are tandemly organized in a genomic segment as a gene cluster. An association between ADH1C polymorphism and alcohol dependence has not been established. [provided by RefSeq, Sep 2019]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BP7: Synonymous conserved (PhyloP=-6.08 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000669.5. 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
	ADH1C	NM_000669.5	MANE Select	c.453A>C	p.Thr151Thr	synonymous	Exon 5 of 9	NP_000660.1	P00326
	ADH1C	NR_133005.2		n.524A>C		non_coding_transcript_exon	Exon 5 of 9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADH1C	ENST00000515683.6	TSL:1 MANE Select	c.453A>C	p.Thr151Thr	synonymous	Exon 5 of 9	ENSP00000426083.1	P00326
	ADH1C	ENST00000865215.1		c.453A>C	p.Thr151Thr	synonymous	Exon 6 of 10	ENSP00000535274.1
	ADH1C	ENST00000865216.1		c.453A>C	p.Thr151Thr	synonymous	Exon 6 of 10	ENSP00000535275.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 76

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	0.099
DANN	Benign	0.36
PhyloP100		-6.1

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

Other links and lift over

dbSNP: rs2241894; hg19: chr4-100266133;