chr21-25752031-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate
The NM_002040.4(GABPA):c.350C>T(p.Ala117Val) variant causes a missense change. The variant allele was found at a frequency of 0.000000686 in 1,458,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 6.9e-7 ( 0 hom. )
Consequence
GABPA
NM_002040.4 missense
NM_002040.4 missense
Scores
1
17
Clinical Significance
Conservation
PhyloP100: 5.52
Genes affected
GABPA (HGNC:4071): (GA binding protein transcription factor subunit alpha) This gene encodes one of three GA-binding protein transcription factor subunits which functions as a DNA-binding subunit. Since this subunit shares identity with a subunit encoding the nuclear respiratory factor 2 gene, it is likely involved in activation of cytochrome oxidase expression and nuclear control of mitochondrial function. This subunit also shares identity with a subunit constituting the transcription factor E4TF1, responsible for expression of the adenovirus E4 gene. Because of its chromosomal localization and ability to form heterodimers with other polypeptides, this gene may play a role in the Down Syndrome phenotype. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Oct 2010]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, GABPA
BP4
?
Computational evidence support a benign effect (MetaRNN=0.07332489).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GABPA | NM_002040.4 | c.350C>T | p.Ala117Val | missense_variant | 5/10 | ENST00000400075.4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GABPA | ENST00000400075.4 | c.350C>T | p.Ala117Val | missense_variant | 5/10 | 1 | NM_002040.4 | P1 | |
GABPA | ENST00000354828.7 | c.350C>T | p.Ala117Val | missense_variant | 5/10 | 1 | P1 | ||
GABPA | ENST00000487266.1 | n.463C>T | non_coding_transcript_exon_variant | 4/4 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD3 exomes AF: 0.00000399 AC: 1AN: 250366Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135534
GnomAD3 exomes
AF:
AC:
1
AN:
250366
Hom.:
AF XY:
AC XY:
0
AN XY:
135534
Gnomad AFR exome
AF:
Gnomad AMR exome
AF:
Gnomad ASJ exome
AF:
Gnomad EAS exome
AF:
Gnomad SAS exome
AF:
Gnomad FIN exome
AF:
Gnomad NFE exome
AF:
Gnomad OTH exome
AF:
GnomAD4 exome AF: 6.86e-7 AC: 1AN: 1458414Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0AN XY: 725560
GnomAD4 exome
AF:
AC:
1
AN:
1458414
Hom.:
Cov.:
29
AF XY:
AC XY:
0
AN XY:
725560
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
Bravo
AF:
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 08, 2022 | The c.350C>T (p.A117V) alteration is located in exon 5 (coding exon 4) of the GABPA gene. This alteration results from a C to T substitution at nucleotide position 350, causing the alanine (A) at amino acid position 117 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Uncertain
Dann
Benign
DEOGEN2
Benign
T;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
D
M_CAP
Benign
T
MetaRNN
Benign
T;T
MetaSVM
Benign
T
MutationAssessor
Benign
N;N
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N
REVEL
Benign
Sift
Benign
T;T
Sift4G
Benign
T;T
Polyphen
B;B
Vest4
MutPred
Gain of sheet (P = 0.0149);Gain of sheet (P = 0.0149);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at