NM_032028.4:c.872C>G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_032028.4(TSSK1B):c.872C>G(p.Ser291Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,190 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Consequence

TSSK1B
NM_032028.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.439

Publications

0 publications found

Variant links:

Genes affected

TSSK1B (HGNC:14968): (testis specific serine kinase 1B) TSSK1 belongs to a family of serine/threonine kinases highly expressed in testis (Hao et al., 2004 [PubMed 15044604]).[supplied by OMIM, Mar 2008]

TSSK1B links:

MCC (HGNC:6935): (MCC regulator of WNT signaling pathway) This gene is a candidate colorectal tumor suppressor gene that is thought to negatively regulate cell cycle progression. The orthologous gene in the mouse expresses a phosphoprotein associated with the plasma membrane and membrane organelles, and overexpression of the mouse protein inhibits entry into S phase. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

MCC links:

ENSG00000232633 (HGNC:):

ENSG00000232633 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.24463779).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TSSK1B	NM_032028.4 link	c.872C>G	p.Ser291Cys	missense_variant	Exon 1 of 1	ENST00000390666.4	NP_114417.1	Q9BXA7A0ZT98
MCC	NM_001085377.2 link	c.171-48756C>G		intron_variant	Intron 1 of 18	ENST00000408903.7	NP_001078846.2	P23508-2
LOC107986366	XR_001742459.2 link	n.179+5189G>C		intron_variant	Intron 2 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TSSK1B	ENST00000390666.4 link	c.872C>G	p.Ser291Cys	missense_variant	Exon 1 of 1	6	NM_032028.4	ENSP00000375081.3	Q9BXA7
MCC	ENST00000408903.7 link	c.171-48756C>G		intron_variant	Intron 1 of 18	2	NM_001085377.2	ENSP00000386227.3	P23508-2
ENSG00000232633	ENST00000416046.3 link	n.1365G>C		non_coding_transcript_exon_variant	Exon 4 of 5	2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74358

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41448

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5194

South Asian (SAS)

AF:

0.000207

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68030

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 13, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.872C>G (p.S291C) alteration is located in exon 1 (coding exon 1) of the TSSK1B gene. This alteration results from a C to G substitution at nucleotide position 872, causing the serine (S) at amino acid position 291 to be replaced by a cysteine (C). 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

0.084

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.28

Eigen

Benign

-0.62

Eigen_PC

Benign

-0.80

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.54

M_CAP

Benign

0.0062

MetaRNN

Benign

0.24

MetaSVM

Benign

-0.93

MutationAssessor

Uncertain

2.1

PhyloP100

0.44

PrimateAI

Benign

0.26

PROVEAN

Benign

-2.0

REVEL

Benign

0.19

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.011

Polyphen

0.99

Vest4

0.18

MutPred

0.20

Loss of glycosylation at S291 (P = 0.0076);

MVP

0.69

MPC

0.40

ClinPred

0.49

GERP RS

0.17

Varity_R

0.12

gMVP

0.20

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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NM_032028.4:c.872C>G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over