19-10759817-A-G

Position:

• chr19-10759817-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_001005361.3(DNM2):​c.235+6A>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00171 in 1,613,852 control chromosomes in the GnomAD database, including 31 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0070 (13 hom., cov: 31)
  • Exomes 𝑓: 0.0012 (18 hom.)
• Consequence: DNM2 NM_001005361.3 splice_region, intron
• Scores: Splicing: ADA: 0.000009650
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:12
• Conservation: PhyloP100: -0.395

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 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BP6: Variant 19-10759817-A-G is Benign according to our data. Variant chr19-10759817-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 158525.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-10759817-A-G is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00701 (1066/152086) while in subpopulation AFR AF= 0.023 (955/41504). AF 95% confidence interval is 0.0218. There are 13 homozygotes in gnomad4. There are 549 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 13 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNM2	NM_001005361.3	c.235+6A>G		splice_region_variant, intron_variant		ENST00000389253.9	NP_001005361.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNM2	ENST00000389253.9	c.235+6A>G		splice_region_variant, intron_variant		5	NM_001005361.3	ENSP00000373905.4

Frequencies

GnomAD3 genomes AF: 0.00692 AC: 1052 AN: 151968 Hom.: 12 Cov.: 31

Gnomad AFR AF: 0.0227

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00249

Gnomad ASJ AF: 0.00404

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000397

Gnomad OTH AF: 0.00431

GnomAD3 exomes AF: 0.00273 AC: 687 AN: 251472 Hom.: 5 AF XY: 0.00258 AC XY: 350 AN XY: 135912

Gnomad AFR exome AF: 0.0231

Gnomad AMR exome AF: 0.00142

Gnomad ASJ exome AF: 0.00367

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00480

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000563

Gnomad OTH exome AF: 0.00228

GnomAD4 exome AF: 0.00115 AC: 1688 AN: 1461766 Hom.: 18 Cov.: 31 AF XY: 0.00116 AC XY: 847 AN XY: 727194

Gnomad4 AFR exome AF: 0.0227

Gnomad4 AMR exome AF: 0.00152

Gnomad4 ASJ exome AF: 0.00367

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00407

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.000193

Gnomad4 OTH exome AF: 0.00262

GnomAD4 genome AF: 0.00701 AC: 1066 AN: 152086 Hom.: 13 Cov.: 31 AF XY: 0.00738 AC XY: 549 AN XY: 74356

Gnomad4 AFR AF: 0.0230

Gnomad4 AMR AF: 0.00249

Gnomad4 ASJ AF: 0.00404

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00415

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000397

Gnomad4 OTH AF: 0.00427

Alfa AF: 0.00407 Hom.: 2

Bravo AF: 0.00812

Asia WGS AF: 0.00462 AC: 16 AN: 3478

EpiCase AF: 0.00104

EpiControl AF: 0.00130

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:12

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:6

Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Feb 08, 2013	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 17, 2018	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -

not provided Benign:3

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Mar 31, 2022	- -
Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Jan 02, 2017	- -

Charcot-Marie-Tooth disease dominant intermediate B Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Autosomal dominant centronuclear myopathy Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	2.2
DANN	Benign	0.43

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0000097
dbscSNV1_RF	Benign	0.0
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

Publications

LitVar

Other links and lift over

dbSNP: rs113192269; hg19: chr19-10870493;