chr1-152759781-T-C

Position:

• chr1-152759781-T-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001025231.3(KPRP):​c.193T>C​(p.Cys65Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 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)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: KPRP NM_001025231.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.376

Genes affected

KPRP (HGNC:31823): (keratinocyte proline rich protein) This gene encodes a proline-rich skin protein possibly involved in keratinocyte differentiation. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.05988881).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KPRP	NM_001025231.3	c.193T>C	p.Cys65Arg	missense_variant	2/2	ENST00000606109.2	NP_001020402.1
KPRP	XM_047421164.1	c.193T>C	p.Cys65Arg	missense_variant	3/3		XP_047277120.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KPRP	ENST00000606109.2	c.193T>C	p.Cys65Arg	missense_variant	2/2	6	NM_001025231.3	ENSP00000475216.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461894 Hom.: 0 Cov.: 38 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

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: 8.99e-7

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

Feb 23, 2023

The c.193T>C (p.C65R) alteration is located in exon 2 (coding exon 1) of the KPRP gene. This alteration results from a T to C substitution at nucleotide position 193, causing the cysteine (C) at amino acid position 65 to be replaced by an arginine (R). 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	0.20
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.47
CADD	Benign	13
DANN	Benign	0.75
DEOGEN2	Benign	0.017	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.031	N
LIST_S2	Benign	0.34	T
M_CAP	Benign	0.0020	T
MetaRNN	Benign	0.060	T
MetaSVM	Benign	-0.92	T
MutationAssessor	Uncertain	2.1	M
PrimateAI	Benign	0.31	T
Sift4G	Uncertain	0.0030	D
Polyphen		0.037	B
Vest4		0.26
MutPred		0.20		Loss of catalytic residue at P64 (P = 0.0079);
MVP		0.18
ClinPred		0.25	T
GERP RS		-4.2
Varity_R		0.35
gMVP		0.073

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: chr1-152732257;