22-19131963-G-C

Position:

• chr22-19131963-G-C

Variant summary

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

The NM_053006.5(TSSK2):​c.564G>C​(p.Gln188His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TSSK2 NM_053006.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.840

Genes affected

TSSK2 (HGNC:11401): (testis specific serine kinase 2) TSSK2 belongs to a family of serine/threonine kinases highly expressed in testis (Hao et al., 2004 [PubMed 15044604]).[supplied by OMIM, Mar 2008]

ESS2 (HGNC:16817): (ess-2 splicing factor homolog) This gene is located within the minimal DGS critical region (MDGCR) thought to contain the gene(s) responsible for a group of developmental disorders. These disorders include DiGeorge syndrome, velocardiofacial syndrome, conotruncal anomaly face syndrome, and some familial or sporadic conotruncal cardiac defects which have been associated with microdeletion of 22q11.2. The encoded protein may be a component of C complex spliceosomes, and the orthologous protein in the mouse localizes to the nucleus. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Dec 2015]

ESS2 (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
TSSK2	NM_053006.5	c.564G>C	p.Gln188His	missense_variant	1/1	ENST00000399635.4	NP_443732.3
ESS2	NM_022719.3	c.*2233C>G		3_prime_UTR_variant	10/10	ENST00000252137.11	NP_073210.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TSSK2	ENST00000399635.4	c.564G>C	p.Gln188His	missense_variant	1/1	6	NM_053006.5	ENSP00000382544.2
ESS2	ENST00000252137	c.*2233C>G		3_prime_UTR_variant	10/10	1	NM_022719.3	ENSP00000252137.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Dec 06, 2024

The c.564G>C (p.Q188H) alteration is located in exon 1 (coding exon 1) of the TSSK2 gene. This alteration results from a G to C substitution at nucleotide position 564, causing the glutamine (Q) at amino acid position 188 to be replaced by a histidine (H). 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	0.69
BayesDel_addAF	Benign	-0.050	T
BayesDel_noAF	Benign	-0.31
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.24	T
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.033	D
MetaRNN	Uncertain	0.44	T
MetaSVM	Benign	-0.70	T
MutationAssessor	Benign	1.5	L
PrimateAI	Uncertain	0.62	T
PROVEAN	Uncertain	-3.5	D
REVEL	Benign	0.24
Sift	Uncertain	0.015	D
Sift4G	Uncertain	0.017	D
Polyphen		0.99	D
Vest4		0.17
MutPred		0.45		Gain of catalytic residue at Y192 (P = 0.1891);
MVP		0.91
MPC		0.75
ClinPred		0.98	D
GERP RS		4.3
Varity_R		0.41
gMVP		0.45

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: chr22-19119476; COSMIC: COSV52816573; COSMIC: COSV52816573;