rs713993043

Variant names:

• chr14-101980380-G-A
• rs713993043
• NM_001376.5:c.791G>A

Your query was ambiguous. Multiple possible variants found:

• chr14-101980380-G-A
• chr14-101980380-G-C
• chr14-101980380-G-T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PM5 PP3_Moderate PP5

The NM_001376.5(DYNC1H1):​c.791G>A​(p.Arg264Gln) 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R264P) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: DYNC1H1 NM_001376.5 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:6 U:4
• Conservation: PhyloP100: 9.57
• Publications: 9 publications found

Genes affected

DYNC1H1 (HGNC:2961): (dynein cytoplasmic 1 heavy chain 1) Dyneins are a group of microtubule-activated ATPases that function as molecular motors. They are divided into two subgroups of axonemal and cytoplasmic dyneins. The cytoplasmic dyneins function in intracellular motility, including retrograde axonal transport, protein sorting, organelle movement, and spindle dynamics. Molecules of conventional cytoplasmic dynein are comprised of 2 heavy chain polypeptides and a number of intermediate and light chains.This gene encodes a member of the cytoplasmic dynein heavy chain family. [provided by RefSeq, Oct 2008]

DYNC1H1 Gene-Disease associations (from GenCC):

• autosomal dominant childhood-onset proximal spinal muscular atrophy without contractures

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Genomics England PanelApp
• intellectual disability, autosomal dominant 13

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae)
• neuronopathy, distal hereditary motor

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• Charcot-Marie-Tooth disease axonal type 2O

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• autosomal dominant non-syndromic intellectual disability

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr14-101980380-G-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1685305.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.913
• PP5: Variant 14-101980380-G-A is Pathogenic according to our data. Variant chr14-101980380-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 210883.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DYNC1H1	NM_001376.5	c.791G>A	p.Arg264Gln	missense_variant	Exon 5 of 78	ENST00000360184.10	NP_001367.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DYNC1H1	ENST00000360184.10	c.791G>A	p.Arg264Gln	missense_variant	Exon 5 of 78	1	NM_001376.5	ENSP00000348965.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:6 Uncertain:4

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Pathogenic:3 Uncertain:1

Oct 19, 2022

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 25609763, 26100331, 25512093, 32656949) -

Jun 01, 2020

CeGaT Center for Human Genetics Tuebingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 01, 2018

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 07, 2023

Revvity Omics, Revvity

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Charcot-Marie-Tooth disease axonal type 2O Pathogenic:1 Uncertain:1

Mar 10, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

For these reasons, this variant has been classified as Pathogenic. This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 264 of the DYNC1H1 protein (p.Arg264Gln). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with spinal muscular atrophy (PMID: 25609763). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 210883). 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 DYNC1H1 protein function. This variant disrupts the p.Arg264 amino acid residue in DYNC1H1. Other variant(s) that disrupt this residue have been observed in individuals with DYNC1H1-related conditions (PMID: 25512093), which suggests that this may be a clinically significant amino acid residue. -

Jan 06, 2016

Inherited Neuropathy Consortium Ii, University Of Miami

Significance: Uncertain significance

Review Status: flagged submission

Collection Method: literature only

- -

Neurodevelopmental delay Pathogenic:1

-

Centre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de Lille

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

DYNC1H1-related neurological disorders Pathogenic:1

Oct 24, 2023

Illumina Laboratory Services, Illumina

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The DYNC1H1 c.791G>A, p.(Arg264Gln) missense variant has been identified in an individual with a phenotype consistent with DYNC1H1-related neurological disorders who demonstrated lower limb malformations, compromised hand function, fine motor difficulties and a brain malformation resembling polymicrogyria by MRI (Scoto et al. 2015). Additionally, a different amino acid substitution at the same codon, p.(Arg264Leu), has been reported in an individual with a phenotype consistent with DYNC1H1-related neurological disorders (Peeters et al. 2015). This variant is not observed in version 2.1.1 or version 3.1.2 of the Genome Aggregation Database. Multiple lines of computational evidence suggest this variant may impact the gene or gene product. The variant was identified in a de novo state in the proband. Based on the available evidence, the c.791G>A, p.(Arg264Gln) variant is classified as likely pathogenic for DYNC1H1-related neurological disorders. -

not specified Uncertain:1

Jun 08, 2015

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: flagged submission

Collection Method: clinical testing

- -

Neuronopathy, distal hereditary motor, autosomal dominant Uncertain:1

-

Inherited Neuropathy Consortium

Significance: Uncertain significance

Review Status: flagged submission

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.71	D
Eigen	Pathogenic	0.95
Eigen_PC	Pathogenic	0.90
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Pathogenic	0.93	D
MetaRNN	Pathogenic	0.91	D
MetaSVM	Uncertain	-0.14	T
MutationAssessor	Uncertain	2.8	M
PhyloP100		9.6
PrimateAI	Pathogenic	0.85	D
PROVEAN	Uncertain	-3.2	D
REVEL	Pathogenic	0.78
Sift	Uncertain	0.013	D
Polyphen		1.0	D
Vest4		0.92
MutPred		0.51		Loss of MoRF binding (P = 0.0399);
MVP		0.72
MPC		2.4
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.56
gMVP		0.93
Mutation Taster		=5/95	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs713993043; hg19: chr14-102446717;