16-53704142-G-C

Variant names:

• chr16-53704142-G-C
• rs375031347
• XR_007064911.1:n.180G>C

Variant summary

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

The XR_007064911.1(FTO):​n.180G>C variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000717 in 1,395,068 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: not found (cov: 32)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: FTO XR_007064911.1 non_coding_transcript_exon
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.35
• 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=-0.82).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FTO	NM_001080432.3	c.-43G>C		upstream_gene_variant		ENST00000471389.6	NP_001073901.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FTO	ENST00000471389.6	c.-43G>C		upstream_gene_variant		1	NM_001080432.3	ENSP00000418823.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.17e-7 AC: 1 AN: 1395068 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 688374

African (AFR) AF: 0.00 AC: 0 AN: 31494

American (AMR) AF: 0.00 AC: 0 AN: 35694

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25158

East Asian (EAS) AF: 0.0000280 AC: 1 AN: 35716

South Asian (SAS) AF: 0.00 AC: 0 AN: 79138

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49274

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5696

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1075044

Other (OTH) AF: 0.00 AC: 0 AN: 57854

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.78
DANN	Benign	0.59
PhyloP100		-2.4
PromoterAI		-0.049	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: rs375031347; hg19: chr16-53738054;