rs777609224

Variant names:

• chr19-10829208-T-C
• rs777609224
• NM_001005361.3:c.2231T>C
• DNM2 p.Val744Ala

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BP6

The NM_001005361.3(DNM2):​c.2231T>C​(p.Val744Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000502 in 1,613,836 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). The gene DNM2 is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000050 (0 hom.)
• Consequence: DNM2 NM_001005361.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:2
• Conservation: PhyloP100: 5.01
• 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]

MIR6793 (HGNC:50251): (microRNA 6793) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

Specifications for DNM2 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Likely_benign. The variant received -3 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.15464047).
• BP6: Variant 19-10829208-T-C is Benign according to our data. Variant chr19-10829208-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 465284.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNM2	NM_001005361.3	MANE Select	c.2231T>C	p.Val744Ala	missense	Exon 19 of 21	NP_001005361.1	P50570-4
	DNM2	NM_001005360.3		c.2231T>C	p.Val744Ala	missense	Exon 19 of 21	NP_001005360.1	P50570-1
	DNM2	NM_001190716.2		c.2231T>C	p.Val744Ala	missense	Exon 19 of 21	NP_001177645.1	P50570-5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNM2	ENST00000389253.9	TSL:5 MANE Select	c.2231T>C	p.Val744Ala	missense	Exon 19 of 21	ENSP00000373905.4	P50570-4
	DNM2	ENST00000355667.11	TSL:1	c.2231T>C	p.Val744Ala	missense	Exon 19 of 21	ENSP00000347890.6	P50570-1
	DNM2	ENST00000585892.5	TSL:1	c.2231T>C	p.Val744Ala	missense	Exon 19 of 21	ENSP00000468734.1	P50570-5

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152196 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 251098 AF XY: 0.0000295

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000529

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000499 AC: 73 AN: 1461640 Hom.: 0 Cov.: 33 AF XY: 0.0000454 AC XY: 33 AN XY: 727134

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53194

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.0000647 AC: 72 AN: 1112008

Other (OTH) AF: 0.0000166 AC: 1 AN: 60392

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152196 Hom.: 0 Cov.: 33 AF XY: 0.0000538 AC XY: 4 AN XY: 74354

African (AFR) AF: 0.00 AC: 0 AN: 41440

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5198

South Asian (SAS) AF: 0.00 AC: 0 AN: 4838

European-Finnish (FIN) AF: 0.0000941 AC: 1 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000103 AC: 7 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.000116 Hom.: 0

Bravo AF: 0.0000453

EpiCase AF: 0.000164

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	1	not provided (2)
-	-	1	Charcot-Marie-Tooth disease dominant intermediate B (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Benign	-0.0079	T
BayesDel_noAF	Benign	-0.14
CADD	Uncertain	24
DANN	Benign	0.81
DEOGEN2	Uncertain	0.63	D
Eigen	Benign	-0.20
Eigen_PC	Benign	-0.093
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.061	D
MetaRNN	Benign	0.15	T
MetaSVM	Uncertain	0.12	D
MutationAssessor	Benign	1.4	L
PhyloP100		5.0
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-1.7	N
REVEL	Uncertain	0.39
Sift	Uncertain	0.022	D
Sift4G	Benign	0.16	T
PromoterAI		0.058	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.11
gMVP		0.33
Mutation Taster		=85/15	polymorphism

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs777609224;

hg19: chr19-10939884;

COSMIC: COSV99042615;