rs773233291

Variant names:

• chr11-61816847-C-A
• rs773233291
• NM_013402.7:c.83G>T

Your query was ambiguous. Multiple possible variants found:

• chr11-61816847-C-A
• chr11-61816847-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_013402.7(FADS1):​c.83G>T​(p.Arg28Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict 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: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FADS1 NM_013402.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.370

Genes affected

FADS1 (HGNC:3574): (fatty acid desaturase 1) The protein encoded by this gene is a member of the fatty acid desaturase (FADS) gene family. Desaturase enzymes regulate unsaturation of fatty acids through the introduction of double bonds between defined carbons of the fatty acyl chain. FADS family members are considered fusion products composed of an N-terminal cytochrome b5-like domain and a C-terminal multiple membrane-spanning desaturase portion, both of which are characterized by conserved histidine motifs. This gene is clustered with family members FADS1 and FADS2 at 11q12-q13.1; this cluster is thought to have arisen evolutionarily from gene duplication based on its similar exon/intron organization. [provided by RefSeq, Jul 2008]

FADS2 (HGNC:3575): (fatty acid desaturase 2) The protein encoded by this gene is a member of the fatty acid desaturase (FADS) gene family. Desaturase enzymes regulate unsaturation of fatty acids through the introduction of double bonds between defined carbons of the fatty acyl chain. FADS family members are considered fusion products composed of an N-terminal cytochrome b5-like domain and a C-terminal multiple membrane-spanning desaturase portion, both of which are characterized by conserved histidine motifs. This gene is clustered with family members at 11q12-q13.1; this cluster is thought to have arisen evolutionarily from gene duplication based on its similar exon/intron organization. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2013]

ACMG classification

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=0.06464273).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FADS1	NM_013402.7	c.83G>T	p.Arg28Leu	missense_variant	Exon 1 of 12	ENST00000350997.12	NP_037534.5
FADS2	NM_001281501.1	c.141+421C>A		intron_variant	Intron 1 of 11		NP_001268430.1
FADS2	NM_001281502.1	c.114+151C>A		intron_variant	Intron 1 of 11		NP_001268431.1
FADS2	XM_047427889.1	c.-2360+421C>A		intron_variant	Intron 1 of 12		XP_047283845.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FADS1	ENST00000350997.12	c.83G>T	p.Arg28Leu	missense_variant	Exon 1 of 12	1	NM_013402.7	ENSP00000322229.9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1334204 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 657874

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	4.8
DANN	Benign	0.84
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.083	N
LIST_S2	Benign	0.40	T
M_CAP	Benign	0.0040	T
MetaRNN	Benign	0.065	T
MetaSVM	Benign	-1.0	T
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-0.34	N
REVEL	Benign	0.025
Sift	Benign	0.073	T
Sift4G	Uncertain	0.0080	D
Vest4		0.080
MutPred		0.39		Loss of methylation at R28 (P = 0.0452);
MVP		0.061
MPC		2.1
ClinPred		0.068	T
GERP RS		-5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.4
gMVP		0.51

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

Other links and lift over

dbSNP: rs773233291; hg19: chr11-61584319; COSMIC: COSV57248006; COSMIC: COSV57248006;