17-27603863-C-G

Variant summary

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

The NM_001394583.1(KSR1):c.1540C>G(p.Leu514Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,682 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/17 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: 0.0000014 (0 hom.)
• Consequence: KSR1 NM_001394583.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0950

Genes affected

KSR1 (HGNC:6465): (kinase suppressor of ras 1) Enables 14-3-3 protein binding activity; ATP binding activity; and protein C-terminus binding activity. Involved in positive regulation of MAPK cascade. Located in endoplasmic reticulum and membrane. Part of protein-containing complex. Implicated in breast adenocarcinoma. Biomarker of breast cancer. [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=0.06994894).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KSR1	NM_001394583.1	c.1540C>G	p.Leu514Val	missense_variant	12/21	ENST00000644974.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KSR1	ENST00000644974.2	c.1540C>G	p.Leu514Val	missense_variant	12/21		NM_001394583.1	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461682 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727130

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.0000765

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: 0.00

GnomAD4 genome Cov.: 33

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

Aug 08, 2023

The c.1195C>G (p.L399V) alteration is located in exon 14 (coding exon 11) of the KSR1 gene. This alteration results from a C to G substitution at nucleotide position 1195, causing the leucine (L) at amino acid position 399 to be replaced by a valine (V). 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
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.52
Cadd	Benign	4.2
Dann	Benign	0.25
Eigen	Benign	-0.99
Eigen_PC	Benign	-0.98
FATHMM_MKL	Benign	0.033	N
LIST_S2	Benign	0.52	T;T;T;.;T;T
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.070	T;T;T;T;T;T
MetaSVM	Benign	-0.93	T
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.24	T
Vest4		0.065
MVP		0.15
MPC		0.37
ClinPred		0.040	T
GERP RS		0.91
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
gMVP		0.070

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs2073656676; hg19: chr17-25930889;