NM_000668.6:c.259+205A>T

Variant names:

• chr4-99317841-T-A
• rs2075633
• NM_000668.6:c.259+205A>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000668.6(ADH1B):​c.259+205A>T variant causes a intron 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: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ADH1B NM_000668.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.739
• Publications: 0 publications found

Genes affected

ADH1B (HGNC:250): (alcohol dehydrogenase 1B (class I), beta polypeptide) The protein encoded by this gene 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. This encoded protein, consisting of several homo- and heterodimers of alpha, beta, and gamma subunits, exhibits high activity for ethanol oxidation and plays 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. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2013]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000668.6. 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
	ADH1B	NM_000668.6	MANE Select	c.259+205A>T		intron	N/A	NP_000659.2
	ADH1B	NM_001286650.2		c.139+205A>T		intron	N/A	NP_001273579.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADH1B	ENST00000305046.13	TSL:1 MANE Select	c.259+205A>T		intron	N/A	ENSP00000306606.8
	ADH1B	ENST00000625860.2	TSL:1	c.139+205A>T		intron	N/A	ENSP00000486614.1
	ADH1B	ENST00000881106.1		c.259+205A>T		intron	N/A	ENSP00000551165.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 580786 Hom.: 0 Cov.: 8 AF XY: 0.00 AC XY: 0 AN XY: 299820

African (AFR) AF: 0.00 AC: 0 AN: 14648

American (AMR) AF: 0.00 AC: 0 AN: 15542

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 14134

East Asian (EAS) AF: 0.00 AC: 0 AN: 30702

South Asian (SAS) AF: 0.00 AC: 0 AN: 43242

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33784

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2220

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 396526

Other (OTH) AF: 0.00 AC: 0 AN: 29988

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	0.95
DANN	Benign	0.44
PhyloP100		-0.74

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs2075633; hg19: chr4-100238998;