9-128250824-G-T

Variant names:

• chr9-128250824-G-T
• rs1413872976
• NM_004408.4:c.2418G>T

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_004408.4(DNM1):​c.2418G>T​(p.Gly806Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 152,012 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 Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DNM1 NM_004408.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.46
• Publications: 0 publications found

Genes affected

DNM1 (HGNC:2972): (dynamin 1) This gene encodes a member of the dynamin subfamily of GTP-binding proteins. The encoded protein possesses unique mechanochemical properties used to tubulate and sever membranes, and is involved in clathrin-mediated endocytosis and other vesicular trafficking processes. Actin and other cytoskeletal proteins act as binding partners for the encoded protein, which can also self-assemble leading to stimulation of GTPase activity. More than sixty highly conserved copies of the 3' region of this gene are found elsewhere in the genome, particularly on chromosomes Y and 15. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

DNM1 Gene-Disease associations (from GenCC):

• genetic developmental and epileptic encephalopathy

  Inheritance: AR, AD Classification: DEFINITIVE, MODERATE Submitted by: ClinGen
• developmental and epileptic encephalopathy, 31A

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• developmental and epileptic encephalopathy, 31B

  Inheritance: AR, AD Classification: STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Lennox-Gastaut syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• undetermined early-onset epileptic encephalopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.6).
• BP6: Variant 9-128250824-G-T is Benign according to our data. Variant chr9-128250824-G-T is described in ClinVar as Likely_benign. ClinVar VariationId is 542681.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=1.46 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004408.4. 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
	DNM1	NM_004408.4	MANE Select	c.2418G>T	p.Gly806Gly	synonymous	Exon 21 of 22	NP_004399.2	Q05193-1
	DNM1	NM_001374269.1		c.2418G>T	p.Gly806Gly	synonymous	Exon 21 of 22	NP_001361198.1	A0A994J7J4
	DNM1	NM_001288739.2		c.2418G>T	p.Gly806Gly	synonymous	Exon 21 of 22	NP_001275668.1	Q05193-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNM1	ENST00000372923.8	TSL:1 MANE Select	c.2418G>T	p.Gly806Gly	synonymous	Exon 21 of 22	ENSP00000362014.4	Q05193-1
	DNM1	ENST00000486160.3	TSL:1	c.2418G>T	p.Gly806Gly	synonymous	Exon 21 of 22	ENSP00000420045.1	Q05193-2
	DNM1	ENST00000634267.2	TSL:5	c.2418G>T	p.Gly806Gly	synonymous	Exon 21 of 22	ENSP00000489096.1	A0A0U1RQP1

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 152012 Hom.: 0 Cov.: 32

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: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1173044 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 566886

African (AFR) AF: 0.00 AC: 0 AN: 23384

American (AMR) AF: 0.00 AC: 0 AN: 8904

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 15770

East Asian (EAS) AF: 0.00 AC: 0 AN: 27326

South Asian (SAS) AF: 0.00 AC: 0 AN: 39578

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 26482

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3298

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 980200

Other (OTH) AF: 0.00 AC: 0 AN: 48102

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 152012 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74256

African (AFR) AF: 0.00 AC: 0 AN: 41402

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5162

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10598

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67962

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Developmental and epileptic encephalopathy, 31A (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.60
CADD	Benign	11
DANN	Benign	0.86
PhyloP100		1.5
PromoterAI		0.0062	Neutral

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1413872976; hg19: chr9-131013103;