12-32679429-C-A

Variant names:

• chr12-32679429-C-A
• rs1344164515
• NM_001278464.2:c.66C>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_012062.5(DNM1L):​c.66C>A​(p.Ile22Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,292 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. I22I) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: DNM1L NM_012062.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.261
• Publications: 0 publications found

Genes affected

DNM1L (HGNC:2973): (dynamin 1 like) This gene encodes a member of the dynamin superfamily of GTPases. The encoded protein mediates mitochondrial and peroxisomal division, and is involved in developmentally regulated apoptosis and programmed necrosis. Dysfunction of this gene is implicated in several neurological disorders, including Alzheimer's disease. Mutations in this gene are associated with the autosomal dominant disorder, encephalopathy, lethal, due to defective mitochondrial and peroxisomal fission (EMPF). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jun 2013]

DNM1L Gene-Disease associations (from GenCC):

• encephalopathy due to mitochondrial and peroxisomal fission defect

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• optic atrophy 5

  Inheritance: AD Classification: STRONG Submitted by: G2P
• encephalopathy, lethal, due to defective mitochondrial peroxisomal fission 1

  Inheritance: AR, AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet
• autosomal dominant optic atrophy, classic form

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Leigh syndrome

  Inheritance: AR, AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.2).
• BP7: Synonymous conserved (PhyloP=0.261 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012062.5. 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
	DNM1L	NM_001278464.2	MANE Plus Clinical	c.66C>A	p.Ile22Ile	synonymous	Exon 1 of 21	NP_001265393.1	O00429-6
	DNM1L	NM_012062.5	MANE Select	c.66C>A	p.Ile22Ile	synonymous	Exon 1 of 20	NP_036192.2	O00429-1
	DNM1L	NM_001278465.2		c.66C>A	p.Ile22Ile	synonymous	Exon 1 of 20	NP_001265394.1	O00429-8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNM1L	ENST00000553257.6	TSL:2 MANE Plus Clinical	c.66C>A	p.Ile22Ile	synonymous	Exon 1 of 21	ENSP00000449089.1	O00429-6
	DNM1L	ENST00000549701.6	TSL:1 MANE Select	c.66C>A	p.Ile22Ile	synonymous	Exon 1 of 20	ENSP00000450399.1	O00429-1
	DNM1L	ENST00000381000.8	TSL:1	c.66C>A	p.Ile22Ile	synonymous	Exon 1 of 20	ENSP00000370388.4	O00429-8

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461292 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727004

African (AFR) AF: 0.00 AC: 0 AN: 33470

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53000

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111882

Other (OTH) AF: 0.00 AC: 0 AN: 60376

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.20
CADD	Benign	14
DANN	Benign	0.95
PhyloP100		0.26
PromoterAI		-0.071	Neutral

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

Other links and lift over

dbSNP: rs1344164515; hg19: chr12-32832363;