chr15-50337206-T-A

Variant names:

• chr15-50337206-T-A
• rs45508400
• NM_016654.5:c.-1+17779A>T

Variant summary

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

The NM_016654.5(GABPB1):​c.-1+17779A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 146,450 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.000014 (0 hom., cov: 25)
• Consequence: GABPB1 NM_016654.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.948
• Publications: 5 publications found

Genes affected

GABPB1 (HGNC:4074): (GA binding protein transcription factor subunit beta 1) This gene encodes the GA-binding protein transcription factor, beta subunit. This protein forms a tetrameric complex with the alpha subunit, and stimulates transcription of target genes. The encoded protein may be involved in activation of cytochrome oxidase expression and nuclear control of mitochondrial function. The crystal structure of a similar protein in mouse has been resolved as a ternary protein complex. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

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=-0.76).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016654.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GABPB1	NM_016654.5	MANE Select	c.-1+17779A>T		intron	N/A	NP_057738.1
	GABPB1	NM_001320910.2		c.-1+9166A>T		intron	N/A	NP_001307839.1
	GABPB1	NM_005254.6		c.-1+17779A>T		intron	N/A	NP_005245.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GABPB1	ENST00000380877.8	TSL:1 MANE Select	c.-1+17779A>T		intron	N/A	ENSP00000370259.3
	GABPB1	ENST00000220429.12	TSL:1	c.-1+17779A>T		intron	N/A	ENSP00000220429.8
	GABPB1	ENST00000429662.6	TSL:1	c.-1+17779A>T		intron	N/A	ENSP00000395771.2

Frequencies

GnomAD3 genomes AF: 0.0000137 AC: 2 AN: 146450 Hom.: 0 Cov.: 25

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000150

Gnomad OTH AF: 0.000505

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

GnomAD4 genome AF: 0.0000137 AC: 2 AN: 146450 Hom.: 0 Cov.: 25 AF XY: 0.0000282 AC XY: 2 AN XY: 70848

African (AFR) AF: 0.00 AC: 0 AN: 40338

American (AMR) AF: 0.00 AC: 0 AN: 14484

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3440

East Asian (EAS) AF: 0.00 AC: 0 AN: 4896

South Asian (SAS) AF: 0.00 AC: 0 AN: 4564

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 8988

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 306

European-Non Finnish (NFE) AF: 0.0000150 AC: 1 AN: 66566

Other (OTH) AF: 0.000505 AC: 1 AN: 1982

Alfa AF: 0.00 Hom.: 3895

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.76
CADD	Benign	13
DANN	Benign	0.88
PhyloP100		0.95

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: rs45508400; hg19: chr15-50629403;