16-53703999-C-T

Variant names:

• chr16-53703999-C-T
• rs527438785
• ENST00000636218.1:c.-186C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000636218.1(FTO):​c.-186C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000733 in 681,954 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.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000038 (0 hom.)
• Consequence: FTO ENST00000636218.1 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.07
• Publications: 0 publications found

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]

RPGRIP1L (HGNC:29168): (RPGRIP1 like) The protein encoded by this gene can localize to the basal body-centrosome complex or to primary cilia and centrosomes in ciliated cells. The encoded protein has been found to interact with nephrocystin-4. Defects in this gene are a cause of Joubert syndrome type 7 (JBTS7) and Meckel syndrome type 5 (MKS5). [provided by RefSeq, Jun 2016]

RPGRIP1L Gene-Disease associations (from GenCC):

• Meckel syndrome, type 5

  Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
• Joubert syndrome 7

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• COACH syndrome 1

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Joubert syndrome with renal defect

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Meckel syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.78).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RPGRIP1L	NM_015272.5	c.-204G>A		upstream_gene_variant		ENST00000647211.2	NP_056087.2
FTO	NM_001080432.3	c.-186C>T		upstream_gene_variant		ENST00000471389.6	NP_001073901.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RPGRIP1L	ENST00000647211.2	c.-204G>A		upstream_gene_variant			NM_015272.5	ENSP00000493946.1
FTO	ENST00000471389.6	c.-186C>T		upstream_gene_variant		1	NM_001080432.3	ENSP00000418823.1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152260 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000723

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 AF: 0.00000378 AC: 2 AN: 529694 Hom.: 0 Cov.: 5 AF XY: 0.00000708 AC XY: 2 AN XY: 282580

African (AFR) AF: 0.0000664 AC: 1 AN: 15056

American (AMR) AF: 0.00 AC: 0 AN: 31248

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 17096

East Asian (EAS) AF: 0.00 AC: 0 AN: 31746

South Asian (SAS) AF: 0.0000180 AC: 1 AN: 55666

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 37272

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3426

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 309034

Other (OTH) AF: 0.00 AC: 0 AN: 29150

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152260 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74398

African (AFR) AF: 0.0000723 AC: 3 AN: 41466

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5198

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68046

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000227

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	1.5
DANN	Benign	0.86
PhyloP100		-1.1
PromoterAI		0.057	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: rs527438785; hg19: chr16-53737911;