chr19-10759823-C-A

Position:

• chr19-10759823-C-A

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_Strong BP6 BS1 BS2

The NM_001005361.3(DNM2):​c.235+12C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0126 in 1,613,952 control chromosomes in the GnomAD database, including 173 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.0093 (11 hom., cov: 31)
  • Exomes 𝑓: 0.013 (162 hom.)
• Consequence: DNM2 NM_001005361.3 intron
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:10
• Conservation: PhyloP100: -1.87

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 -13 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BP6: Variant 19-10759823-C-A is Benign according to our data. Variant chr19-10759823-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 158524.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=7}. Variant chr19-10759823-C-A is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00932 (1419/152184) while in subpopulation NFE AF= 0.0144 (979/67996). AF 95% confidence interval is 0.0136. There are 11 homozygotes in gnomad4. There are 672 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 11 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNM2	NM_001005361.3	c.235+12C>A		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+12C>A		intron_variant		5	NM_001005361.3	ENSP00000373905.4

Frequencies

GnomAD3 genomes AF: 0.00932 AC: 1418 AN: 152066 Hom.: 11 Cov.: 31

Gnomad AFR AF: 0.00304

Gnomad AMI AF: 0.00661

Gnomad AMR AF: 0.00262

Gnomad ASJ AF: 0.00662

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00623

Gnomad FIN AF: 0.0186

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0144

Gnomad OTH AF: 0.00768

GnomAD3 exomes AF: 0.0105 AC: 2630 AN: 251440 Hom.: 25 AF XY: 0.0103 AC XY: 1395 AN XY: 135898

Gnomad AFR exome AF: 0.00265

Gnomad AMR exome AF: 0.00341

Gnomad ASJ exome AF: 0.00546

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00689

Gnomad FIN exome AF: 0.0220

Gnomad NFE exome AF: 0.0147

Gnomad OTH exome AF: 0.00929

GnomAD4 exome AF: 0.0130 AC: 18995 AN: 1461768 Hom.: 162 Cov.: 31 AF XY: 0.0127 AC XY: 9257 AN XY: 727190

Gnomad4 AFR exome AF: 0.00182

Gnomad4 AMR exome AF: 0.00344

Gnomad4 ASJ exome AF: 0.00528

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00737

Gnomad4 FIN exome AF: 0.0220

Gnomad4 NFE exome AF: 0.0146

Gnomad4 OTH exome AF: 0.00993

GnomAD4 genome AF: 0.00932 AC: 1419 AN: 152184 Hom.: 11 Cov.: 31 AF XY: 0.00903 AC XY: 672 AN XY: 74402

Gnomad4 AFR AF: 0.00303

Gnomad4 AMR AF: 0.00262

Gnomad4 ASJ AF: 0.00662

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00644

Gnomad4 FIN AF: 0.0186

Gnomad4 NFE AF: 0.0144

Gnomad4 OTH AF: 0.00760

Alfa AF: 0.00689 Hom.: 4

Bravo AF: 0.00793

Asia WGS AF: 0.00231 AC: 8 AN: 3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:10

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not specified Benign:4

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	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -

not provided Benign:3

Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Oct 01, 2024	DNM2: BS1, BS2 -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 11, 2023	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -

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

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 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. -

Centronuclear myopathy Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Feb 08, 2013

- -

Autosomal dominant centronuclear myopathy Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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	-0.88
CADD	Benign	0.078
DANN	Benign	0.49

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

Publications

LitVar

Other links and lift over

dbSNP: rs147026993; hg19: chr19-10870499;