20-31566288-A-C
Position:
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_178581.3(HM13):c.1027A>C(p.Met343Leu) 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. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 31)
Consequence
HM13
NM_178581.3 missense
NM_178581.3 missense
Scores
3
16
Clinical Significance
Conservation
PhyloP100: 5.75
Genes affected
HM13 (HGNC:16435): (histocompatibility minor 13) The protein encoded by this gene, which localizes to the endoplasmic reticulum, catalyzes intramembrane proteolysis of some signal peptides after they have been cleaved from a preprotein. This activity is required to generate signal sequence-derived human lymphocyte antigen-E epitopes that are recognized by the immune system, and to process hepatitis C virus core protein. The encoded protein is an integral membrane protein with sequence motifs characteristic of the presenilin-type aspartic proteases. Multiple transcript variants encoding several different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
HM13 (HGNC:49760): (MCTS family member 2) This locus represents a retrogene copy of MCTS1 (GeneID:28985) and contains an ORF similar to that parent gene. This locus is situated in a differentially methylated region (DMR) and transcripts in this region are imprinted. [provided by RefSeq, Nov 2021]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.18556023).
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| HM13 | NM_178581.3 | c.1027A>C | p.Met343Leu | missense_variant | 11/13 | ENST00000398174.9 | NP_848696.1 | |
| HM13 | NM_178580.3 | c.1027A>C | p.Met343Leu | missense_variant | 11/13 | NP_848695.1 | ||
| HM13 | NM_030789.4 | c.1027A>C | p.Met343Leu | missense_variant | 11/12 | NP_110416.1 |
Ensembl
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
31
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome
GnomAD4 genome
Cov.:
31
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 | Oct 16, 2023 | The c.1027A>C (p.M343L) alteration is located in exon 11 (coding exon 11) of the HM13 gene. This alteration results from a A to C substitution at nucleotide position 1027, causing the methionine (M) at amino acid position 343 to be replaced by a leucine (L). 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
Uncertain
D;D;D;D
M_CAP
Benign
T
MetaRNN
Benign
T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
N;N;N;.
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N;.
REVEL
Benign
Sift
Benign
T;T;T;.
Sift4G
Benign
T;T;T;.
Polyphen
B;B;B;.
Vest4
MutPred
Gain of helix (P = 0.132);Gain of helix (P = 0.132);Gain of helix (P = 0.132);.;
MVP
MPC
ClinPred
T
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
Publications
No publications associated with this variant yet.