19-50827155-C-G

Position:

• chr19-50827155-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_017509.4(KLK15):​c.204G>C​(p.Met68Ile) 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. 13/20 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: KLK15 NM_017509.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.199

Genes affected

KLK15 (HGNC:20453): (kallikrein related peptidase 15) Kallikreins are a subgroup of serine proteases having diverse physiological functions. Growing evidence suggests that many kallikreins are implicated in carcinogenesis and some have potential as novel cancer and other disease biomarkers. This gene is one of the fifteen kallikrein subfamily members located in a cluster on chromosome 19. In prostate cancer, this gene has increased expression, which indicates its possible use as a diagnostic or prognostic marker for prostate cancer. The gene contains multiple polyadenylation sites and alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2008]

KLK15 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.35253352).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KLK15	NM_017509.4	c.204G>C	p.Met68Ile	missense_variant	4/6	ENST00000598239.6	NP_059979.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KLK15	ENST00000598239.6	c.204G>C	p.Met68Ile	missense_variant	4/6	1	NM_017509.4	ENSP00000469315.1

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

May 13, 2024

The c.204G>C (p.M68I) alteration is located in exon 3 (coding exon 3) of the KLK15 gene. This alteration results from a G to C substitution at nucleotide position 204, causing the methionine (M) at amino acid position 68 to be replaced by an isoleucine (I). 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	0.53
BayesDel_addAF	Benign	-0.050	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.14	.;T;.;.
Eigen	Benign	-0.75
Eigen_PC	Benign	-0.55
FATHMM_MKL	Benign	0.18	N
LIST_S2	Benign	0.44	T;T;T;D
M_CAP	Benign	0.082	D
MetaRNN	Benign	0.27	T;T;T;T
MetaSVM	Benign	-0.68	T
MutationAssessor	Benign	-0.065	.;N;.;.
PrimateAI	Uncertain	0.51	T
REVEL	Benign	0.27
Sift4G	Benign	0.65	T;T;T;.
Polyphen		0.0090	.;B;.;.
Vest4		0.14
MutPred		0.57		.;Gain of sheet (P = 0.0827);.;.;
MVP		0.66
MPC		0.44
ClinPred		0.90	D
GERP RS		4.5
Varity_R		0.25
gMVP		0.41

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: chr19-51330411;