chr1-27881974-G-T

Position:

• chr1-27881974-G-T

Variant summary

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

The NM_001105556.3(THEMIS2):​c.650G>T​(p.Arg217Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R217H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: THEMIS2 NM_001105556.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.47

Genes affected

THEMIS2 (HGNC:16839): (thymocyte selection associated family member 2) Predicted to be involved in T cell receptor signaling pathway and regulation of B cell activation. Predicted to be active in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

THEMIS2 (HGNC:):

ACMG classification

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/exons	MANE	Protein	UniProt
THEMIS2	NM_001105556.3	c.650G>T	p.Arg217Leu	missense_variant	4/6	ENST00000373921.8	NP_001099026.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
THEMIS2	ENST00000373921.8	c.650G>T	p.Arg217Leu	missense_variant	4/6	5	NM_001105556.3	ENSP00000363031.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1457494 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 724766

Gnomad4 AFR exome AF: 0.00

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: 0.00

Gnomad4 OTH exome AF: 0.00

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

Nov 03, 2022

The c.650G>T (p.R217L) alteration is located in exon 4 (coding exon 4) of the THEMIS2 gene. This alteration results from a G to T substitution at nucleotide position 650, causing the arginine (R) at amino acid position 217 to be replaced by a leucine (L). 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	Pathogenic	0.76
BayesDel_addAF	Pathogenic	0.30	D
BayesDel_noAF	Pathogenic	0.19
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	.;T;T
Eigen	Pathogenic	0.78
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.83	T;T;T
M_CAP	Uncertain	0.12	D
MetaRNN	Uncertain	0.71	D;D;D
MetaSVM	Benign	-0.38	T
MutationAssessor	Pathogenic	3.1	M;.;M
PrimateAI	Benign	0.45	T
PROVEAN	Pathogenic	-4.6	D;D;D
REVEL	Uncertain	0.51
Sift	Uncertain	0.0030	D;D;D
Sift4G	Uncertain	0.0040	D;D;D
Polyphen		1.0	D;.;D
Vest4		0.93
MutPred		0.56		Loss of MoRF binding (P = 0.0617);.;Loss of MoRF binding (P = 0.0617);
MVP		0.61
MPC		1.3
ClinPred		0.99	D
GERP RS		5.3
Varity_R		0.67
gMVP		0.81

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: chr1-28208485;