17-41190611-C-T

Variant names:

• chr17-41190611-C-T
• NM_001190460.1:c.725C>T

Variant summary

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

The NM_001190460.1(KRTAP9-1):​c.725C>T​(p.Ser242Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000277 in 1,445,608 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000028 (0 hom.)
• Consequence: KRTAP9-1 NM_001190460.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.10

Genes affected

KRTAP9-1 (HGNC:18912): (keratin associated protein 9-1) 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=0.22340935).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRTAP9-1	NM_001190460.1	c.725C>T	p.Ser242Phe	missense_variant	Exon 1 of 1	ENST00000398470.1	NP_001177389.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRTAP9-1	ENST00000398470.1	c.725C>T	p.Ser242Phe	missense_variant	Exon 1 of 1	6	NM_001190460.1	ENSP00000381488.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000277 AC: 4 AN: 1445608 Hom.: 0 Cov.: 37 AF XY: 0.00000139 AC XY: 1 AN XY: 717360

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: 0.00000362

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 29, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.725C>T (p.S242F) alteration is located in exon 1 (coding exon 1) of the KRTAP9-1 gene. This alteration results from a C to T substitution at nucleotide position 725, causing the serine (S) at amino acid position 242 to be replaced by a phenylalanine (F). 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	-0.23	T
BayesDel_noAF	Benign	-0.57
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Benign	0.015	T;.
Eigen	Benign	0.16
Eigen_PC	Benign	0.12
FATHMM_MKL	Benign	0.70	D
LIST_S2	Uncertain	0.87	D;T
M_CAP	Benign	0.0036	T
MetaRNN	Benign	0.22	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.6	M;.
PrimateAI	Benign	0.29	T
PROVEAN	Uncertain	-2.6	D;.
REVEL	Benign	0.087
Sift	Benign	0.70	T;.
Sift4G	Uncertain	0.0080	D;D
Vest4		0.32
MutPred		0.40		Gain of sheet (P = 0.0149);.;
MVP		0.39
MPC		0.030
ClinPred		0.99	D
GERP RS		3.4
Varity_R		0.15
gMVP		0.090

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: chr17-39346863;