chr12-94571544-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_020698.4(TMCC3):​c.1325G>A​(p.Ser442Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000752 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

TMCC3
NM_020698.4 missense

Scores

1
10
8

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.20
Variant links:
Genes affected
TMCC3 (HGNC:29199): (transmembrane and coiled-coil domain family 3) Enables 14-3-3 protein binding activity and identical protein binding activity. Located in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]
MIR7844 (HGNC:50044): (microRNA 7844) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

Genome browser will be placed here

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 rank MANE Protein UniProt
TMCC3NM_020698.4 linkc.1325G>A p.Ser442Asn missense_variant Exon 4 of 4 ENST00000261226.9 NP_065749.3 Q9ULS5
TMCC3NM_001301036.2 linkc.1232G>A p.Ser411Asn missense_variant Exon 4 of 4 NP_001287965.1 Q9ULS5G3V207
MIR7844NR_106998.1 linkn.-192G>A upstream_gene_variant
MIR7844unassigned_transcript_2046 n.-217G>A upstream_gene_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TMCC3ENST00000261226.9 linkc.1325G>A p.Ser442Asn missense_variant Exon 4 of 4 1 NM_020698.4 ENSP00000261226.4 Q9ULS5
TMCC3ENST00000551457.1 linkc.1232G>A p.Ser411Asn missense_variant Exon 4 of 4 1 ENSP00000449888.1 G3V207
MIR7844ENST00000616161.1 linkn.-192G>A upstream_gene_variant 6

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000795
AC:
2
AN:
251428
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135888
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000176
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000752
AC:
11
AN:
1461886
Hom.:
0
Cov.:
31
AF XY:
0.00000963
AC XY:
7
AN XY:
727244
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000899
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Bravo
AF:
0.00000756
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Aug 20, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.1325G>A (p.S442N) alteration is located in exon 4 (coding exon 4) of the TMCC3 gene. This alteration results from a G to A substitution at nucleotide position 1325, causing the serine (S) at amino acid position 442 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.37
BayesDel_addAF
Benign
-0.030
T
BayesDel_noAF
Benign
-0.27
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Benign
0.077
T;.
Eigen
Pathogenic
0.69
Eigen_PC
Uncertain
0.66
FATHMM_MKL
Uncertain
0.88
D
LIST_S2
Benign
0.79
T;T
M_CAP
Benign
0.030
D
MetaRNN
Uncertain
0.52
D;D
MetaSVM
Benign
-0.42
T
MutationAssessor
Uncertain
2.4
M;.
PrimateAI
Uncertain
0.69
T
PROVEAN
Benign
-1.4
N;N
REVEL
Uncertain
0.33
Sift
Uncertain
0.0020
D;D
Sift4G
Uncertain
0.0050
D;D
Polyphen
1.0
D;.
Vest4
0.39
MutPred
0.80
Gain of relative solvent accessibility (P = 0.09);.;
MVP
0.18
MPC
0.28
ClinPred
0.83
D
GERP RS
5.3
Varity_R
0.65
gMVP
0.77

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs1184195180; hg19: chr12-94965320; API