chr12-32731058-G-C

Position:

• chr12-32731058-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM2 PP2

The NM_001278464.2(DNM1L):​c.1163G>C​(p.Gly388Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DNM1L NM_001278464.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.74

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]

YARS2 (HGNC:24249): (tyrosyl-tRNA synthetase 2) This gene encodes a mitochondrial protein that catalyzes the attachment of tyrosine to tRNA(Tyr). Mutations in this gene are associated with myopathy with lactic acidosis and sideroblastic anemia type 2 (MLASA2). [provided by RefSeq, Jan 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_001278464.2
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), DNM1L. . Gene score misZ 3.8282 (greater than the threshold 3.09). Trascript score misZ 5.2186 (greater than threshold 3.09). GenCC has associacion of gene with encephalopathy, lethal, due to defective mitochondrial peroxisomal fission 1, encephalopathy due to mitochondrial and peroxisomal fission defect, optic atrophy 5, Leigh syndrome, autosomal dominant optic atrophy, classic form.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DNM1L	NM_001278464.2	c.1163G>C	p.Gly388Ala	missense_variant	11/21	ENST00000553257.6
DNM1L	NM_012062.5	c.1124G>C	p.Gly375Ala	missense_variant	10/20	ENST00000549701.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DNM1L	ENST00000553257.6	c.1163G>C	p.Gly388Ala	missense_variant	11/21	2	NM_001278464.2
DNM1L	ENST00000549701.6	c.1124G>C	p.Gly375Ala	missense_variant	10/20	1	NM_012062.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jan 13, 2020

Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.91
BayesDel_addAF	Pathogenic	0.25	D
BayesDel_noAF	Uncertain	0.12
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.80	.;.;.;D;D;.;.;.
Eigen	Uncertain	0.64
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D;D;D;D;D;D;D;D
M_CAP	Uncertain	0.086	D
MetaRNN	Uncertain	0.63	D;D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.24	T
MutationAssessor	Benign	1.6	L;.;.;L;.;L;L;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.89	D
PROVEAN	Pathogenic	-5.1	D;D;D;D;D;D;D;D
REVEL	Uncertain	0.59
Sift	Benign	0.10	T;D;D;D;T;T;T;T
Sift4G	Benign	0.19	T;T;T;T;T;T;T;T
Polyphen		0.99	.;.;.;D;.;.;.;.
Vest4		0.70
MutPred		0.48		Gain of catalytic residue at H371 (P = 0.0076);.;.;Gain of catalytic residue at H371 (P = 0.0076);.;Gain of catalytic residue at H371 (P = 0.0076);Gain of catalytic residue at H371 (P = 0.0076);.;
MVP		0.87
MPC		1.8
ClinPred		0.99	D
GERP RS		4.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.84
gMVP		0.90

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-32883992;