Genetic Variant FTMT:p.Gly35Ala (chr5-121852067-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_177478.2(FTMT):c.104G>C(p.Gly35Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00026 in 1,589,404 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00027 ( 0 hom. )

Consequence

FTMT
NM_177478.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.563

Variant links:

Genes affected

FTMT (HGNC:17345): (ferritin mitochondrial) Predicted to enable ferric iron binding activity and ferrous iron binding activity. Involved in several processes, including cellular iron ion homeostasis; positive regulation of aconitate hydratase activity; and positive regulation of succinate dehydrogenase activity. Located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

FTMT links:

LOC105379149 (HGNC:):

LOC105379149 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.055402756).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FTMT	NM_177478.2 link	c.104G>C	p.Gly35Ala	missense_variant	Exon 1 of 1	ENST00000321339.3	NP_803431.1	Q8N4E7
LOC105379149	XR_001742862.1 link	n.379+10623G>C		intron_variant	Intron 3 of 3
LOC105379149	XR_948712.3 link	n.379+10623G>C		intron_variant	Intron 3 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FTMT	ENST00000321339.3 link	c.104G>C	p.Gly35Ala	missense_variant	Exon 1 of 1	6	NM_177478.2	ENSP00000313691.1		Q8N4E7

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152044

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000134

AC:

AN:

208412

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

116614

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000280

Gnomad OTH exome

AF:

0.000381

GnomAD4 exome

AF:

0.000273

AC:

392

AN:

1437360

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

173

AN XY:

715130

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000340

Gnomad4 OTH exome

AF:

0.000269

GnomAD4 genome

AF:

0.000145

AC:

AN:

152044

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74268

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000107

Hom.:

Bravo

AF:

0.000162

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000241

AC:

ExAC

AF:

0.000102

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.104G>C (p.G35A) alteration is located in exon 1 (coding exon 1) of the FTMT gene. This alteration results from a G to C substitution at nucleotide position 104, causing the glycine (G) at amino acid position 35 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.076

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.62

CADD

Benign

7.2

DANN

Benign

0.37

DEOGEN2

Benign

0.23

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.10

LIST_S2

Benign

0.34

M_CAP

Benign

0.027

MetaRNN

Benign

0.055

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-0.50

REVEL

Benign

0.070

Sift

Benign

0.63

Sift4G

Benign

0.30

Polyphen

0.0

Vest4

0.14

MVP

0.27

MPC

0.35

ClinPred

0.032

GERP RS

0.088

Varity_R

0.030

gMVP

0.45

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over