DNM1 p.Lys206Asn

Variant names:

• chr9-128220016-G-T
• NM_004408.4:c.618G>T
• DNM1 p.Lys206Asn

Your query was ambiguous. Multiple possible variants found:

• chr9-128220016-G-T
• chr9-128220016-G-C

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PS1 PM1 PM2 PP3_Strong

The NM_004408.4(DNM1):​c.618G>T​(p.Lys206Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Pathogenic in ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DNM1 NM_004408.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.09
• 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, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• 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: Pathogenic. The variant received 12 ACMG points.

• PS1: Transcript NM_004408.4 (DNM1) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in ClinVar.
• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 5 uncertain in NM_004408.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.974

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.618G>T	p.Lys206Asn	missense	Exon 5 of 22	NP_004399.2	Q05193-1
	DNM1	NM_001374269.1		c.618G>T	p.Lys206Asn	missense	Exon 5 of 22	NP_001361198.1	A0A994J7J4
	DNM1	NM_001288739.2		c.618G>T	p.Lys206Asn	missense	Exon 5 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.618G>T	p.Lys206Asn	missense	Exon 5 of 22	ENSP00000362014.4	Q05193-1
	DNM1	ENST00000486160.3	TSL:1	c.618G>T	p.Lys206Asn	missense	Exon 5 of 22	ENSP00000420045.1	Q05193-2
	DNM1	ENST00000634267.2	TSL:5	c.618G>T	p.Lys206Asn	missense	Exon 5 of 22	ENSP00000489096.1	A0A0U1RQP1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1445996 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 717806

African (AFR) AF: 0.00 AC: 0 AN: 33184

American (AMR) AF: 0.00 AC: 0 AN: 41850

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25786

East Asian (EAS) AF: 0.00 AC: 0 AN: 39030

South Asian (SAS) AF: 0.00 AC: 0 AN: 84226

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52318

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5748

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1104046

Other (OTH) AF: 0.00 AC: 0 AN: 59808

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.95	D
Eigen	Pathogenic	0.87
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.73	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	4.3	H
PhyloP100		2.1
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-4.8	D
REVEL	Pathogenic	0.90
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Varity_R		0.98
gMVP		1.0
Mutation Taster		=3/97	disease causing

Splicing

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

hg19: chr9-130982295;