chr1-54717495-A-G
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4
The NM_004623.5(TTC4):c.233A>G(p.Gln78Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 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: 0.0 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
TTC4
NM_004623.5 missense
NM_004623.5 missense
Scores
2
17
Clinical Significance
Conservation
PhyloP100: 6.40
Genes affected
TTC4 (HGNC:12394): (tetratricopeptide repeat domain 4) This gene encodes a protein that contains tetratricopeptide (TPR) repeats, which often mediate protein-protein interactions and chaperone activity. The encoded protein interacts with heat shock proteins 70 and 90. Alternative splicing results in multiple transcript variants. Naturally-occuring readthrough transcription occurs from upstream gene MROH (maestro heat-like repeat family member 7) to this gene. [provided by RefSeq, Apr 2014]
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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;
BP4
?
Computational evidence support a benign effect (MetaRNN=0.32436043).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TTC4 | NM_004623.5 | c.233A>G | p.Gln78Arg | missense_variant | 3/10 | ENST00000371281.4 | |
MROH7-TTC4 | NR_037639.2 | n.4411A>G | non_coding_transcript_exon_variant | 26/33 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TTC4 | ENST00000371281.4 | c.233A>G | p.Gln78Arg | missense_variant | 3/10 | 1 | NM_004623.5 | P1 | |
TTC4 | ENST00000371284.9 | n.399A>G | non_coding_transcript_exon_variant | 3/10 | 5 | ||||
TTC4 | ENST00000486621.1 | n.277A>G | non_coding_transcript_exon_variant | 3/3 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0AN: 1388742Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0AN XY: 687294
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
AC:
0
AN:
1388742
Hom.:
Cov.:
30
AF XY:
AC XY:
0
AN XY:
687294
Gnomad4 AFR exome
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Gnomad4 AMR exome
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Gnomad4 EAS exome
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Gnomad4 SAS exome
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Gnomad4 FIN exome
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Gnomad4 OTH 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
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jan 08, 2024 | The c.233A>G (p.Q78R) alteration is located in exon 3 (coding exon 3) of the TTC4 gene. This alteration results from a A to G substitution at nucleotide position 233, causing the glutamine (Q) at amino acid position 78 to be replaced by an arginine (R). 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
Benign
Dann
Benign
DEOGEN2
Benign
T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Benign
T
M_CAP
Benign
T
MetaRNN
Benign
T
MetaSVM
Benign
T
MutationAssessor
Benign
N
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N
REVEL
Benign
Sift
Benign
T
Sift4G
Benign
T
Polyphen
B
Vest4
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
Publications
No publications associated with this variant yet.