NM_032228.6:c.91C>T

Variant names:

• chr11-13694856-C-T
• NM_032228.6:c.91C>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Moderate BP6_Moderate BP7

The NM_032228.6(FAR1):​c.91C>T​(p.Leu31Leu) variant causes a synonymous 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. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: FAR1 NM_032228.6 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 2.55
• Publications: 0 publications found

Genes affected

FAR1 (HGNC:26222): (fatty acyl-CoA reductase 1) The protein encoded by this gene is required for the reduction of fatty acids to fatty alcohols, a process that is required for the synthesis of monoesters and ether lipids. NADPH is required as a cofactor in this reaction, and 16-18 carbon saturated and unsaturated fatty acids are the preferred substrate. This is a peroxisomal membrane protein, and studies suggest that the N-terminus contains a large catalytic domain located on the outside of the peroxisome, while the C-terminus is exposed to the matrix of the peroxisome. Studies indicate that the regulation of this protein is dependent on plasmalogen levels. Mutations in this gene have been associated with individuals affected by severe intellectual disability, early-onset epilepsy, microcephaly, congenital cataracts, growth retardation, and spasticity (PMID: 25439727). A pseudogene of this gene is located on chromosome 13. [provided by RefSeq, Jan 2015]

FAR1 Gene-Disease associations (from GenCC):

• fatty acyl-CoA reductase 1 deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, ClinGen, G2P, Labcorp Genetics (formerly Invitae)
• spastic paraparesis-cataracts-speech delay syndrome

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• fatty acyl-CoA reductase 1 upregulation

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen
• hereditary spastic paraplegia 9A

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.29).
• BP6: Variant 11-13694856-C-T is Benign according to our data. Variant chr11-13694856-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 3630951.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=2.55 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032228.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAR1	NM_032228.6	MANE Select	c.91C>T	p.Leu31Leu	synonymous	Exon 2 of 12	NP_115604.1	Q8WVX9
	FAR1	NM_001441242.1		c.91C>T	p.Leu31Leu	synonymous	Exon 2 of 12	NP_001428171.1
	FAR1	NM_001441243.1		c.91C>T	p.Leu31Leu	synonymous	Exon 2 of 12	NP_001428172.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAR1	ENST00000354817.8	TSL:1 MANE Select	c.91C>T	p.Leu31Leu	synonymous	Exon 2 of 12	ENSP00000346874.3	Q8WVX9
	FAR1	ENST00000907330.1		c.91C>T	p.Leu31Leu	synonymous	Exon 2 of 12	ENSP00000577389.1
	FAR1	ENST00000907331.1		c.91C>T	p.Leu31Leu	synonymous	Exon 3 of 13	ENSP00000577390.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.29
CADD	Benign	13
DANN	Benign	0.76
PhyloP100		2.6

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

hg19: chr11-13716403;