chr4-99310760-T-C

Position:

• chr4-99310760-T-C

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_000668.6(ADH1B):​c.1103+5A>G variant causes a splice donor 5th base, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0012 in 1,603,682 control chromosomes in the GnomAD database, including 25 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.0064 (12 hom., cov: 32)
  • Exomes 𝑓: 0.00065 (13 hom.)
• Consequence: ADH1B NM_000668.6 splice_donor_5th_base, intron
• Scores: Splicing: ADA: 0.00004814
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.0580

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

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 4-99310760-T-C is Benign according to our data. Variant chr4-99310760-T-C is described in ClinVar as [Benign]. Clinvar id is 714988.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00642 (978/152304) while in subpopulation AFR AF= 0.0222 (921/41564). AF 95% confidence interval is 0.021. There are 12 homozygotes in gnomad4. There are 454 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 12 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ADH1B	NM_000668.6	c.1103+5A>G		splice_donor_5th_base_variant, intron_variant		ENST00000305046.13
ADH1B	NM_001286650.2	c.983+5A>G		splice_donor_5th_base_variant, intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ADH1B	ENST00000305046.13	c.1103+5A>G		splice_donor_5th_base_variant, intron_variant		1	NM_000668.6	P1
ADH1B	ENST00000625860.2	c.983+5A>G		splice_donor_5th_base_variant, intron_variant		1
ADH1B	ENST00000506651.5	c.983+5A>G		splice_donor_5th_base_variant, intron_variant		2
ADH1B	ENST00000515694.4	n.3198+5A>G		splice_donor_5th_base_variant, intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.00643 AC: 978 AN: 152186 Hom.: 12 Cov.: 32

Gnomad AFR AF: 0.0222

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00275

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0158

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00334

GnomAD3 exomes AF: 0.00176 AC: 425 AN: 242036 Hom.: 7 AF XY: 0.00127 AC XY: 166 AN XY: 130854

Gnomad AFR exome AF: 0.0226

Gnomad AMR exome AF: 0.00142

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000711

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000988

Gnomad OTH exome AF: 0.00102

GnomAD4 exome AF: 0.000654 AC: 949 AN: 1451378 Hom.: 13 Cov.: 31 AF XY: 0.000573 AC XY: 414 AN XY: 721946

Gnomad4 AFR exome AF: 0.0220

Gnomad4 AMR exome AF: 0.00174

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000155

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000189

Gnomad4 OTH exome AF: 0.00195

GnomAD4 genome AF: 0.00642 AC: 978 AN: 152304 Hom.: 12 Cov.: 32 AF XY: 0.00610 AC XY: 454 AN XY: 74474

Gnomad4 AFR AF: 0.0222

Gnomad4 AMR AF: 0.00275

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00331

Alfa AF: 0.00151 Hom.: 1

Bravo AF: 0.00730

Asia WGS AF: 0.00115 AC: 4 AN: 3478

EpiCase AF: 0.000109

EpiControl AF: 0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 24, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	10
DANN	Benign	0.70

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000048
dbscSNV1_RF	Benign	0.020
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

Other links and lift over

dbSNP: rs28914782; hg19: chr4-100231917;