11-71538507-C-T

Position:

• chr11-71538507-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_021046.3(KRTAP5-8):​c.452C>T​(p.Pro151Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,986 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: KRTAP5-8 NM_021046.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.323

Genes affected

KRTAP5-8 (HGNC:23603): (keratin associated protein 5-8) Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11624566).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KRTAP5-8	NM_021046.3	c.452C>T	p.Pro151Leu	missense_variant	1/1	ENST00000398534.4	NP_066384.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KRTAP5-8	ENST00000398534.4	c.452C>T	p.Pro151Leu	missense_variant	1/1		NM_021046.3	ENSP00000420723	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1460986 Hom.: 0 Cov.: 35 AF XY: 0.00000138 AC XY: 1 AN XY: 726800

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.0000383

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000936 Hom.: 0

Bravo AF: 0.00000756

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

Apr 30, 2024

The c.452C>T (p.P151L) alteration is located in exon 1 (coding exon 1) of the KRTAP5-8 gene. This alteration results from a C to T substitution at nucleotide position 452, causing the proline (P) at amino acid position 151 to be replaced by a leucine (L). 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	0.25
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	14
DANN	Benign	0.97
DEOGEN2	Benign	0.093	T
Eigen	Benign	-0.47
Eigen_PC	Benign	-0.60
FATHMM_MKL	Benign	0.051	N
LIST_S2	Benign	0.64	T
M_CAP	Benign	0.0014	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Pathogenic	4.0	H
MutationTaster	Benign	0.86	N
PROVEAN	Pathogenic	-7.7	D
REVEL	Benign	0.11
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		0.050	B
Vest4		0.27
MutPred		0.29		Loss of ubiquitination at K150 (P = 0.1166);
MVP		0.21
MPC		0.045
ClinPred		0.98	D
GERP RS		1.6
Varity_R		0.22
gMVP		0.061

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs1950060879; hg19: chr11-71249553; COSMIC: COSV68325028;