15-65029596-C-A

Variant names:

• chr15-65029596-C-A
• rs1480256934
• NM_139242.4:c.18G>T
• MTFMT p.Arg6Arg

Variant summary

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

The NM_139242.4(MTFMT):​c.18G>T​(p.Arg6Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000459 in 1,460,358 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 (★). Synonymous variant affecting the same amino acid position (i.e. R6R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000047 (0 hom.)
• Consequence: MTFMT NM_139242.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.14
• Publications: 0 publications found

Genes affected

MTFMT (HGNC:29666): (mitochondrial methionyl-tRNA formyltransferase) The protein encoded by this nuclear gene localizes to the mitochondrion, where it catalyzes the formylation of methionyl-tRNA. [provided by RefSeq, Jun 2011]

MTFMT Gene-Disease associations (from GenCC):

• combined oxidative phosphorylation defect type 15

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• Leigh syndrome

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Leigh syndrome with leukodystrophy

  Inheritance: AR 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=-0.69).
• BP6: Variant 15-65029596-C-A is Benign according to our data. Variant chr15-65029596-C-A is described in ClinVar as Likely_benign. ClinVar VariationId is 1452032.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-1.14 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_139242.4. 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
	MTFMT	NM_139242.4	MANE Select	c.18G>T	p.Arg6Arg	synonymous	Exon 1 of 9	NP_640335.2	Q96DP5-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MTFMT	ENST00000220058.9	TSL:1 MANE Select	c.18G>T	p.Arg6Arg	synonymous	Exon 1 of 9	ENSP00000220058.4	Q96DP5-1
	MTFMT	ENST00000901062.1		c.18G>T	p.Arg6Arg	synonymous	Exon 1 of 10	ENSP00000571121.1
	MTFMT	ENST00000901059.1		c.18G>T	p.Arg6Arg	synonymous	Exon 1 of 9	ENSP00000571118.1

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152064 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

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: 0.0000588

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00 AC: 0 AN: 76302 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000474 AC: 62 AN: 1308294 Hom.: 0 Cov.: 32 AF XY: 0.0000468 AC XY: 30 AN XY: 641154

African (AFR) AF: 0.00 AC: 0 AN: 26484

American (AMR) AF: 0.00 AC: 0 AN: 26234

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 22700

East Asian (EAS) AF: 0.00 AC: 0 AN: 28726

South Asian (SAS) AF: 0.0000140 AC: 1 AN: 71266

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 39204

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4216

European-Non Finnish (NFE) AF: 0.0000589 AC: 61 AN: 1035546

Other (OTH) AF: 0.00 AC: 0 AN: 53918

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152064 Hom.: 0 Cov.: 32 AF XY: 0.0000404 AC XY: 3 AN XY: 74272

African (AFR) AF: 0.00 AC: 0 AN: 41440

American (AMR) AF: 0.0000654 AC: 1 AN: 15284

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5142

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10588

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

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 67992

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.69
CADD	Benign	4.6
DANN	Benign	0.75
PhyloP100		-1.1
PromoterAI		0.084	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

dbSNP: rs1480256934;

hg19: chr15-65321934;