rs864309705

Variant names:

• chr19-10793748-G-A
• rs864309705
• NM_001005361.3:c.1021G>A

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3 PP5_Moderate

The NM_001005361.3(DNM2):​c.1021G>A​(p.Glu341Lys) 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 (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: DNM2 NM_001005361.3 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 8.12
• Publications: 3 publications found

Genes affected

DNM2 (HGNC:2974): (dynamin 2) Dynamins represent one of the subfamilies of GTP-binding proteins. These proteins share considerable sequence similarity over the N-terminal portion of the molecule, which contains the GTPase domain. Dynamins are associated with microtubules. They have been implicated in cell processes such as endocytosis and cell motility, and in alterations of the membrane that accompany certain activities such as bone resorption by osteoclasts. Dynamins bind many proteins that bind actin and other cytoskeletal proteins. Dynamins can also self-assemble, a process that stimulates GTPase activity. Five alternatively spliced transcripts encoding different proteins have been described. Additional alternatively spliced transcripts may exist, but their full-length nature has not been determined. [provided by RefSeq, Jun 2010]

DNM2 Gene-Disease associations (from GenCC):

• autosomal dominant centronuclear myopathy

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: ClinGen, Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Charcot-Marie-Tooth disease

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• Charcot-Marie-Tooth disease dominant intermediate B

  Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
• autosomal dominant Charcot-Marie-Tooth disease type 2M

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• fetal akinesia-cerebral and retinal hemorrhage syndrome

  Inheritance: AR Classification: SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
• hereditary spastic paraplegia

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.759
• PP5: Variant 19-10793748-G-A is Pathogenic according to our data. Variant chr19-10793748-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 218920.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001005361.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNM2	NM_001005361.3	MANE Select	c.1021G>A	p.Glu341Lys	missense	Exon 8 of 21	NP_001005361.1
	DNM2	NM_001005360.3		c.1021G>A	p.Glu341Lys	missense	Exon 8 of 21	NP_001005360.1
	DNM2	NM_001190716.2		c.1021G>A	p.Glu341Lys	missense	Exon 8 of 21	NP_001177645.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNM2	ENST00000389253.9	TSL:5 MANE Select	c.1021G>A	p.Glu341Lys	missense	Exon 8 of 21	ENSP00000373905.4
	DNM2	ENST00000355667.11	TSL:1	c.1021G>A	p.Glu341Lys	missense	Exon 8 of 21	ENSP00000347890.6
	DNM2	ENST00000585892.5	TSL:1	c.1021G>A	p.Glu341Lys	missense	Exon 8 of 21	ENSP00000468734.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Charcot-Marie-Tooth disease dominant intermediate B (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.24
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.86	D
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Benign	0.051	D
MetaRNN	Pathogenic	0.76	D
MetaSVM	Benign	-0.50	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		8.1
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-2.9	D
REVEL	Uncertain	0.54
Sift	Benign	0.24	T
Sift4G	Benign	0.74	T
Polyphen		0.84	P
Vest4		0.78
MutPred		0.50		Gain of MoRF binding (P = 0.0132)
MVP		0.90
MPC		1.7
ClinPred		0.95	D
GERP RS		4.8
Varity_R		0.69
gMVP		0.82
Mutation Taster		=1/99	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: rs864309705; hg19: chr19-10904424;