rs587777547
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_020458.4(TTC7A):āc.829C>Gā(p.Gln277Glu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,852 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (ā ).
Frequency
Genomes: not found (cov: 32)
Exomes š: 0.0000014 ( 0 hom. )
Consequence
TTC7A
NM_020458.4 missense
NM_020458.4 missense
Scores
9
8
Clinical Significance
Conservation
PhyloP100: 5.36
Genes affected
TTC7A (HGNC:19750): (tetratricopeptide repeat domain 7A) This gene encodes a protein containing tetratricopeptide repeats. Mutations in this gene disrupt intestinal development and can cause early onset inflammatory bowel disease and intestinal atresia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TTC7A | NM_020458.4 | c.829C>G | p.Gln277Glu | missense_variant | 6/20 | ENST00000319190.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TTC7A | ENST00000319190.11 | c.829C>G | p.Gln277Glu | missense_variant | 6/20 | 2 | NM_020458.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461852Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1AN XY: 727226
GnomAD4 exome
AF:
AC:
2
AN:
1461852
Hom.:
Cov.:
31
AF XY:
AC XY:
1
AN XY:
727226
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Multiple gastrointestinal atresias Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Nov 01, 2019 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with TTC7A-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces glutamine with glutamic acid at codon 277 of the TTC7A protein (p.Gln277Glu). The glutamine residue is highly conserved and there is a small physicochemical difference between glutamine and glutamic acid. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
Eigen
Benign
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D;D
M_CAP
Benign
T
MetaRNN
Uncertain
D;D;D
MetaSVM
Benign
T
MutationTaster
Benign
D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
N;N;D
REVEL
Benign
Sift
Uncertain
D;D;D
Sift4G
Benign
T;T;T
Polyphen
B;B;.
Vest4
MutPred
0.34
.;Loss of MoRF binding (P = 0.0283);Loss of MoRF binding (P = 0.0283);
MVP
MPC
0.37
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
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