11-61815055-C-T

Variant names:

• chr11-61815055-C-T
• rs75810419
• NM_013402.7:c.375+1500G>A

Variant summary

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

The NM_013402.7(FADS1):​c.375+1500G>A variant causes a intron 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. 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 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.309
• Publications: 4 publications found

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]

MIR1908 (HGNC:35392): (microRNA 1908) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

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=-0.74).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_013402.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FADS1	NM_013402.7	MANE Select	c.375+1500G>A		intron	N/A	NP_037534.5
	MIR1908	NR_031729.1		n.*106G>A		downstream_gene	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FADS1	ENST00000350997.12	TSL:1 MANE Select	c.375+1500G>A		intron	N/A	ENSP00000322229.9
	FADS1	ENST00000541683.1	TSL:2	n.1128G>A		non_coding_transcript_exon	Exon 2 of 2
	FADS1	ENST00000542506.5	TSL:2	c.-308G>A		5_prime_UTR	Exon 1 of 12	ENSP00000441403.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 3406 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 1848

African (AFR) AF: 0.00 AC: 0 AN: 76

American (AMR) AF: 0.00 AC: 0 AN: 8

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 8

East Asian (EAS) AF: 0.00 AC: 0 AN: 110

South Asian (SAS) AF: 0.00 AC: 0 AN: 90

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 954

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1618

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 334

Other (OTH) AF: 0.00 AC: 0 AN: 208

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 7

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.74
CADD	Benign	8.1
DANN	Benign	0.85
PhyloP100		0.31
PromoterAI		0.035	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.3

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: rs75810419; hg19: chr11-61582527;