chr12-54962962-C-G

Position:

• chr12-54962962-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001136030.3(TESPA1):​c.936G>C​(p.Leu312Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. 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)
• Consequence: TESPA1 NM_001136030.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.38

Genes affected

TESPA1 (HGNC:29109): (thymocyte expressed, positive selection associated 1) Predicted to enable phospholipase binding activity. Predicted to be involved in several processes, including COP9 signalosome assembly; positive regulation of T cell differentiation in thymus; and positive regulation of T cell receptor signaling pathway. Predicted to act upstream of or within TCR signalosome assembly. Part of COP9 signalosome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

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=0.20089799).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TESPA1	NM_001136030.3	c.936G>C	p.Leu312Phe	missense_variant	9/11	ENST00000449076.6	NP_001129502.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TESPA1	ENST00000449076.6	c.936G>C	p.Leu312Phe	missense_variant	9/11	2	NM_001136030.3	ENSP00000400892	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 25, 2023

The c.936G>C (p.L312F) alteration is located in exon 9 (coding exon 8) of the TESPA1 gene. This alteration results from a G to C substitution at nucleotide position 936, causing the leucine (L) at amino acid position 312 to be replaced by a phenylalanine (F). 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	Benign	0.25
BayesDel_addAF	Benign	0.0080	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.068	.;.;T;T;.
Eigen	Uncertain	0.24
Eigen_PC	Benign	0.20
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Benign	0.78	.;.;.;T;T
M_CAP	Benign	0.043	D
MetaRNN	Benign	0.20	T;T;T;T;T
MetaSVM	Benign	-0.65	T
MutationAssessor	Benign	1.8	.;.;L;L;.
MutationTaster	Benign	0.98	D;D;D;D;D
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-1.7	N;N;N;N;N
REVEL	Benign	0.24
Sift	Pathogenic	0.0	D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D
Polyphen		1.0	.;.;D;D;.
Vest4		0.31
MutPred		0.098		.;.;Gain of methylation at K308 (P = 0.0913);Gain of methylation at K308 (P = 0.0913);.;
MVP		0.57
MPC		0.65
ClinPred		0.83	D
GERP RS		2.6
Varity_R		0.20
gMVP		0.52

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-55356746;