19-50977620-G-C

Variant names:

• chr19-50977620-G-C
• rs17855561
• NM_005046.4:c.678C>G

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_005046.4(KLK7):​c.678C>G​(p.Cys226Trp) 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 pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. C226C) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: KLK7 NM_005046.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.70
• Publications: 2 publications found

Genes affected

KLK7 (HGNC:6368): (kallikrein related peptidase 7) This gene encodes a member of the kallikrein subfamily of serine proteases. These enzymes have diverse physiological functions and many kallikrein genes are biomarkers for cancer. The encoded protein has chymotrypsin-like activity and plays a role in the proteolysis of intercellular cohesive structures that precedes desquamation, the shedding of the outermost layer of the epidermis. The encoded protein may play a role in cancer invasion and metastasis, and increased expression of this gene is associated with unfavorable prognosis and progression of several types of cancer. Polymorphisms in this gene may play a role in the development of atopic dermatitis. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, which is one of fifteen kallikrein subfamily members located in a gene cluster on chromosome 19. [provided by RefSeq, May 2011]

ENSG00000267879 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.989

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005046.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KLK7	NM_005046.4	MANE Select	c.678C>G	p.Cys226Trp	missense	Exon 6 of 6	NP_005037.1
	KLK7	NM_139277.2		c.678C>G	p.Cys226Trp	missense	Exon 6 of 6	NP_644806.1
	KLK7	NM_001243126.1		c.657C>G	p.Cys219Trp	missense	Exon 5 of 5	NP_001230055.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KLK7	ENST00000595820.6	TSL:1 MANE Select	c.678C>G	p.Cys226Trp	missense	Exon 6 of 6	ENSP00000470538.1
	KLK7	ENST00000597707.5	TSL:1	c.462C>G	p.Cys154Trp	missense	Exon 5 of 5	ENSP00000469950.1
	KLK7	ENST00000391807.5	TSL:5	c.678C>G	p.Cys226Trp	missense	Exon 6 of 6	ENSP00000375683.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.30
CADD	Benign	7.8
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.87	D
Eigen	Benign	-0.20
Eigen_PC	Benign	-0.48
FATHMM_MKL	Benign	0.25	N
LIST_S2	Benign	0.79	T
M_CAP	Pathogenic	0.77	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	0.97	D
MutationAssessor	Pathogenic	4.5	H
PhyloP100		-1.7
PrimateAI	Uncertain	0.52	T
PROVEAN	Pathogenic	-11	D
REVEL	Pathogenic	0.68
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.80
MutPred		0.95		Loss of catalytic residue at P225 (P = 0.0079)
MVP		0.97
MPC		0.27
ClinPred		1.0	D
GERP RS		-3.1
Varity_R		0.95
gMVP		0.97
Mutation Taster		=50/50

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

Other links and lift over

dbSNP: rs17855561; hg19: chr19-51480876;