rs61743972

Positions:

• chr16-53826285-G-A
• chr16-53826285-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001080432.3(FTO):​c.545G>A​(p.Gly182Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,200 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G182A) has been classified as Likely benign.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: FTO NM_001080432.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.68

Genes affected

FTO (HGNC:24678): (FTO alpha-ketoglutarate dependent dioxygenase) This gene is a nuclear protein of the AlkB related non-haem iron and 2-oxoglutarate-dependent oxygenase superfamily but the exact physiological function of this gene is not known. Other non-heme iron enzymes function to reverse alkylated DNA and RNA damage by oxidative demethylation. Studies in mice and humans indicate a role in nervous and cardiovascular systems and a strong association with body mass index, obesity risk, and type 2 diabetes. [provided by RefSeq, Jul 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2265509).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FTO	NM_001080432.3	c.545G>A	p.Gly182Asp	missense_variant	3/9	ENST00000471389.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FTO	ENST00000471389.6	c.545G>A	p.Gly182Asp	missense_variant	3/9	1	NM_001080432.3	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152200 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 33

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152200 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74346

Gnomad4 AFR AF: 0.0000241

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: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.047	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.043	T;.;D;T;.
Eigen	Benign	-0.053
Eigen_PC	Benign	0.064
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.90	D;D;D;D;D
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.23	T;T;T;T;T
MetaSVM	Benign	-0.78	T
MutationAssessor	Benign	1.4	.;.;L;.;.
MutationTaster	Benign	0.77	D;D
PrimateAI	Uncertain	0.58	T
PROVEAN	Benign	-1.5	.;.;N;.;.
REVEL	Benign	0.053
Sift	Uncertain	0.023	.;.;D;.;.
Sift4G	Benign	0.23	.;.;T;.;.
Polyphen		0.046	.;.;B;.;.
Vest4		0.54
MutPred		0.47		.;Loss of catalytic residue at S183 (P = 0.0916);Loss of catalytic residue at S183 (P = 0.0916);Loss of catalytic residue at S183 (P = 0.0916);Loss of catalytic residue at S183 (P = 0.0916);
MVP		0.70
MPC		0.85
ClinPred		0.89	D
GERP RS		4.2
Varity_R		0.11
gMVP		0.71

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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

Other links and lift over

dbSNP: rs61743972; hg19: chr16-53860197;