1-35736601-C-G

Variant names:

• chr1-35736601-C-G
• NM_022111.4:c.3915G>C

Variant summary

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

The NM_022111.4(CLSPN):​c.3915G>C​(p.Lys1305Asn) 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. 13/21 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: CLSPN NM_022111.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0130

Genes affected

CLSPN (HGNC:19715): (claspin) The product of this gene is an essential upstream regulator of checkpoint kinase 1 and triggers a checkpoint arrest of the cell cycle in response to replicative stress or DNA damage. The protein is also required for efficient DNA replication during a normal S phase. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

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=0.082963854).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLSPN	NM_022111.4	c.3915G>C	p.Lys1305Asn	missense_variant	Exon 25 of 25	ENST00000318121.8	NP_071394.2
CLSPN	NM_001190481.2	c.3723G>C	p.Lys1241Asn	missense_variant	Exon 24 of 24		NP_001177410.1
CLSPN	NM_001330490.2	c.3909+313G>C		intron_variant	Intron 24 of 24		NP_001317419.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLSPN	ENST00000318121.8	c.3915G>C	p.Lys1305Asn	missense_variant	Exon 25 of 25	1	NM_022111.4	ENSP00000312995.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jun 29, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3915G>C (p.K1305N) alteration is located in exon 25 (coding exon 25) of the CLSPN gene. This alteration results from a G to C substitution at nucleotide position 3915, causing the lysine (K) at amino acid position 1305 to be replaced by an asparagine (N). 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	Uncertain	0.48
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.71
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.013	T;.;.
Eigen	Benign	-0.58
Eigen_PC	Benign	-0.60
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.75	T;T;T
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.083	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.97	L;.;.
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-1.8	N;N;N
REVEL	Benign	0.089
Sift	Benign	0.062	T;T;T
Sift4G	Uncertain	0.025	D;D;T
Polyphen		0.55	P;P;.
Vest4		0.15
MutPred		0.17		Loss of methylation at K1305 (P = 0.0067);.;.;
MVP		0.21
MPC		0.18
ClinPred		0.41	T
GERP RS		1.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.054
gMVP		0.26

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-36202202;