12-29604242-G-C
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3
The NM_001193451.2(TMTC1):c.1186C>G(p.Pro396Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,718 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
TMTC1
NM_001193451.2 missense
NM_001193451.2 missense
Scores
11
4
2
Clinical Significance
Conservation
PhyloP100: 9.18
Genes affected
TMTC1 (HGNC:24099): (transmembrane O-mannosyltransferase targeting cadherins 1) Enables mannosyltransferase activity. Involved in protein O-linked mannosylation. Predicted to be located in endoplasmic reticulum. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 3 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.823
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TMTC1 | NM_001193451.2 | c.1186C>G | p.Pro396Ala | missense_variant | 7/18 | ENST00000539277.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TMTC1 | ENST00000539277.6 | c.1186C>G | p.Pro396Ala | missense_variant | 7/18 | 1 | NM_001193451.2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461718Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 727162
GnomAD4 exome
AF:
AC:
2
AN:
1461718
Hom.:
Cov.:
31
AF XY:
AC XY:
0
AN XY:
727162
Gnomad4 AFR exome
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Gnomad4 FIN exome
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ESP6500AA
AF:
AC:
0
ESP6500EA
AF:
AC:
1
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 31, 2024 | The c.1186C>G (p.P396A) alteration is located in exon 7 (coding exon 7) of the TMTC1 gene. This alteration results from a C to G substitution at nucleotide position 1186, causing the proline (P) at amino acid position 396 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D;D;D
M_CAP
Benign
T
MetaRNN
Pathogenic
D;D;D;D
MetaSVM
Uncertain
T
MutationTaster
Benign
D;D;D;D;D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;D;D;D
REVEL
Uncertain
Sift
Pathogenic
D;D;D;D
Sift4G
Pathogenic
D;D;D;D
Polyphen
0.91, 1.0
.;P;.;D
Vest4
MVP
MPC
0.68
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