rs878853160

Positions:

• chr7-40046007-A-G

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Very_Strong

The NM_003718.5(CDK13):​c.2525A>G​(p.Asn842Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N842D) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 31)
• Consequence: CDK13 NM_003718.5 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:22 O:1
• Conservation: PhyloP100: 9.32

Genes affected

CDK13 (HGNC:1733): (cyclin dependent kinase 13) The protein encoded by this gene is a member of the cyclin-dependent serine/threonine protein kinase family. Members of this family are well known for their essential roles as master switches in cell cycle control. The exact function of this protein has not yet been determined, but it may play a role in mRNA processing and may be involved in regulation of hematopoiesis. Alternatively spliced transcript variants have been described.[provided by RefSeq, Dec 2009]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_003718.5
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr7-40046006-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 522794.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.982
• PP5: Variant 7-40046007-A-G is Pathogenic according to our data. Variant chr7-40046007-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 235887.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-40046007-A-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDK13	NM_003718.5	c.2525A>G	p.Asn842Ser	missense_variant	6/14	ENST00000181839.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDK13	ENST00000181839.10	c.2525A>G	p.Asn842Ser	missense_variant	6/14	1	NM_003718.5	P3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 25

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:22 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Congenital heart defects, dysmorphic facial features, and intellectual developmental disorder Pathogenic:11 Other:1

Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Aug 12, 2022	- -
Pathogenic, criteria provided, single submitter	clinical testing	Genetics and Molecular Pathology, SA Pathology	May 12, 2021	The CDK13 c.2525A>G variant is classified as PATHOGENIC (PS4, PS2, PP3) The CDK13 c.2525A>G variant is a single nucleotide change in exon 6 of the CDK13 gene, which is predicted to change the amino acid asparagine at position 842 in the protein to serine. This recurrent variant has been identified in multiple individuals with global developmental delay or intellectual disability and dysmorphic features, with or without congenital heart defects, hypotonia or hearing loss (PMID:27479907, PMID:29021403, PMID:29222009) (PS4). A number of these cases have been shown to be de novo (PMID:28807008) (PS2). This variant is in dbSNP (rs878853160) but is absent from population databases (PM2). This variant has been reported in ClinVar as Pathogenic by multiple other diagnostic laboratories (Variation ID:235887), and has been reported as damaging for congenital heart disease, developmental delay and intellectual disability in HGMD (CM1610451). Computational predictions support a deleterious effect on the gene or gene product (PP3). -
Pathogenic, criteria provided, single submitter	research	HudsonAlpha Institute for Biotechnology, HudsonAlpha Institute for Biotechnology	May 12, 2016	- -
Pathogenic, criteria provided, single submitter	clinical testing	3billion	Oct 02, 2021	Same nucleotide change resulting in same amino acid change has been previously reported as de novoo in a similarly affected individual (ClinVar ID: VCV000235887.20, PMID: 27479907 and 29021403, PS1, PS2 and PS4_M). The missense variant is located in a mutational hot spot and/or well-established functional domain in which established pathogenic variants have been reported (PM1). It is not observed in the gnomAD v2.1.1 dataset (PM2). A different missense change at the same codon (p.Asn842Asp) has been reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000522794.5, PMID: 28807008, 29021403, PM5). The variant was observed as assumed (i.e. paternity and maternity not confirmed) de novoo (3billion dataset, PM6). In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.861, 3Cnet: 0.997, PP3). Therefore, this variant is classified as pathogenic according to the recommendation of ACMG/AMP guideline. -
Pathogenic, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Sep 22, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	Equipe Genetique des Anomalies du Developpement, Université de Bourgogne	Jul 22, 2020	- -
Pathogenic, no assertion criteria provided	clinical testing	Service de Génétique Moléculaire, Hôpital Robert Debré	Sep 03, 2020	- -
Pathogenic, criteria provided, single submitter	clinical testing	Victorian Clinical Genetics Services, Murdoch Childrens Research Institute	Feb 02, 2022	Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0105 - The mechanism of disease for this gene is not clearly established. However, haploinsufficiency, dominant negative and gain of function have been suggested in the literature (PMIDs: 30904094, 29393965, 28807008) (I) 0107 - This gene is associated with autosomal dominant disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from asparagine to serine. (I) 0251 - This variant is heterozygous. (I) 0301 - Variant is absent from gnomAD (both v2 and v3). (SP) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0602 - Variant is located in a hotspot region or cluster of pathogenic variants. This variant is located in the protein kinase domain (PDB), where disease-associated missense variants are clustered (DECIPHER). (SP) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. The variant has been reported in many patients and shown to be de novo in multiple patients (ClinVar, Deciphering Developmental Disorders (DDD) Study). (SP) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -
Pathogenic, no assertion criteria provided	clinical testing	Department of Genetics, Rouen University Hospital, Normandy Center for Genomic and Personalized Medicine	Jun 10, 2020	- -
not provided, no classification provided	literature only	GeneReviews	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	MGZ Medical Genetics Center	Apr 22, 2022	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Feb 15, 2024	- -

not provided Pathogenic:8

Pathogenic, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Pathogenic, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Aug 31, 2022	Not observed in large population cohorts (gnomAD); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 28554332, 28867141, 29393965, 31883531, 27479907, 28807008, 29021403, 29222009, 28135719, 24999027, 19344873, 25560765, 28991257, 31238879, 31036916, 29738522, 32277047, 32368696, 32901917, 31785789) -
Pathogenic, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Pathogenic, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 18, 2022	This variant is not present in population databases (gnomAD no frequency). For these reasons, this variant has been classified as Pathogenic. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt CDK13 protein function. ClinVar contains an entry for this variant (Variation ID: 235887). This missense change has been observed in individual(s) with CDK13-related conditions (PMID: 28807008). In at least one individual the variant was observed to be de novo. This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 842 of the CDK13 protein (p.Asn842Ser). -
Pathogenic, criteria provided, single submitter	clinical testing	Laboratory of Molecular Genetics (Pr. Bezieau's lab), CHU de Nantes	Sep 14, 2018	- -
Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2021	- -

Global developmental delay Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Equipe Genetique des Anomalies du Developpement, Université de Bourgogne

-

- -

Marfanoid habitus and intellectual disability Pathogenic:1

Likely pathogenic, criteria provided, single submitter

research

Equipe Genetique des Anomalies du Developpement, Université de Bourgogne

-

- -

Inborn genetic diseases Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 15, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Benign	0.34	T;.;T;.;.;.;.
Eigen	Pathogenic	0.73
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.95	D;D;D;D;D;D;D
M_CAP	Pathogenic	0.69	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.4	M;M;.;.;.;.;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.81	D
PROVEAN	Pathogenic	-4.6	D;D;.;.;.;.;.
REVEL	Pathogenic	0.86
Sift	Pathogenic	0.0	D;D;.;.;.;.;.
Sift4G	Pathogenic	0.0	D;D;D;.;D;.;.
Polyphen		1.0	D;P;D;.;.;.;.
Vest4		0.92
MutPred		0.90		Loss of sheet (P = 0.1398);Loss of sheet (P = 0.1398);.;.;.;.;.;
MVP		0.91
MPC		2.3
ClinPred		1.0	D
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.92
gMVP		0.99

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: rs878853160; hg19: chr7-40085606;