chr5-36177202-A-C

Position:

• chr5-36177202-A-C

Variant summary

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

The NM_005983.4(SKP2):​c.971A>C​(p.Lys324Thr) 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 benign outcome for this variant. 15/21 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)
• Consequence: SKP2 NM_005983.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.93

Genes affected

SKP2 (HGNC:10901): (S-phase kinase associated protein 2) This gene encodes a member of the F-box protein family which is characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of ubiquitin protein ligase complex called SCFs (SKP1-cullin-F-box), which function in phosphorylation-dependent ubiquitination. The F-box proteins are divided into 3 classes: Fbws containing WD-40 domains, Fbls containing leucine-rich repeats, and Fbxs containing either different protein-protein interaction modules or no recognizable motifs. The protein encoded by this gene belongs to the Fbls class; in addition to an F-box, this protein contains 10 tandem leucine-rich repeats. This protein is an essential element of the cyclin A-CDK2 S-phase kinase. It specifically recognizes phosphorylated cyclin-dependent kinase inhibitor 1B (CDKN1B, also referred to as p27 or KIP1) predominantly in S phase and interacts with S-phase kinase-associated protein 1 (SKP1 or p19). In addition, this gene is established as a protooncogene causally involved in the pathogenesis of lymphomas. Alternative splicing of this gene generates three transcript variants encoding different isoforms. [provided by RefSeq, Jul 2011]

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=0.14773872).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SKP2	NM_005983.4	c.971A>C	p.Lys324Thr	missense_variant	9/10	ENST00000274255.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SKP2	ENST00000274255.11	c.971A>C	p.Lys324Thr	missense_variant	9/10	1	NM_005983.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

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

Nov 08, 2022

The c.971A>C (p.K324T) alteration is located in exon 9 (coding exon 9) of the SKP2 gene. This alteration results from a A to C substitution at nucleotide position 971, causing the lysine (K) at amino acid position 324 to be replaced by a threonine (T). 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	0.19
BayesDel_addAF	Benign	-0.090	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	19
DANN	Benign	0.74
DEOGEN2	Benign	0.12	.;.;T;T;.
Eigen	Benign	-0.67
Eigen_PC	Benign	-0.44
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Benign	0.84	T;T;T;T;T
M_CAP	Benign	0.0065	T
MetaRNN	Benign	0.15	T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.080	N;.;N;.;.
MutationTaster	Benign	0.78	D;D;D;D
PrimateAI	Benign	0.47	T
PROVEAN	Benign	2.8	N;.;N;.;N
REVEL	Benign	0.21
Sift	Benign	1.0	T;.;T;.;T
Sift4G	Benign	0.53	T;T;T;T;T
Polyphen		0.014	B;.;B;.;.
Vest4		0.39
MutPred		0.67		Loss of solvent accessibility (P = 0.0045);.;Loss of solvent accessibility (P = 0.0045);.;.;
MVP		0.46
MPC		0.58
ClinPred		0.97	D
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.20
gMVP		0.69

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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: chr5-36177304;