5-33988288-G-T

Variant names:

• chr5-33988288-G-T
• rs367582757
• NM_014324.6:c.*805C>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_014324.6(AMACR):​c.*805C>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000241 in 1,534,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00012 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00025 (0 hom.)
• Consequence: AMACR NM_014324.6 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0850

Genes affected

AMACR (HGNC:451): (alpha-methylacyl-CoA racemase) This gene encodes a racemase. The encoded enzyme interconverts pristanoyl-CoA and C27-bile acylCoAs between their (R)- and (S)-stereoisomers. The conversion to the (S)-stereoisomers is necessary for degradation of these substrates by peroxisomal beta-oxidation. Encoded proteins from this locus localize to both mitochondria and peroxisomes. Mutations in this gene may be associated with adult-onset sensorimotor neuropathy, pigmentary retinopathy, and adrenomyeloneuropathy due to defects in bile acid synthesis. Alternatively spliced transcript variants have been described. Read-through transcription also exists between this gene and the upstream neighboring C1QTNF3 (C1q and tumor necrosis factor related protein 3) gene. [provided by RefSeq, Mar 2011]

C1QTNF3-AMACR (HGNC:49198): (C1QTNF3-AMACR readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring C1q and tumor necrosis factor related protein 3 (C1QTNF3) and alpha-methylacyl-CoA racemase (AMACR) genes on chromosome 5. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus not likely to produce a protein product. [provided by RefSeq, Mar 2011]

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AMACR	NM_014324.6	c.*805C>A		3_prime_UTR_variant	Exon 5 of 5	ENST00000335606.11	NP_055139.4
AMACR	NM_001167595.2	c.*20C>A		3_prime_UTR_variant	Exon 6 of 6		NP_001161067.1
AMACR	NM_203382.3	c.*1196C>A		3_prime_UTR_variant	Exon 4 of 4		NP_976316.1
C1QTNF3-AMACR	NR_037951.1	n.2310C>A		non_coding_transcript_exon_variant	Exon 9 of 9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AMACR	ENST00000335606.11	c.*805C>A		3_prime_UTR_variant	Exon 5 of 5	1	NM_014324.6	ENSP00000334424.6
C1QTNF3-AMACR	ENST00000382079.3	n.*1380C>A		non_coding_transcript_exon_variant	Exon 9 of 9	2		ENSP00000371511.3
C1QTNF3-AMACR	ENST00000382079.3	n.*1380C>A		3_prime_UTR_variant	Exon 9 of 9	2		ENSP00000371511.3

Frequencies

GnomAD3 genomes AF: 0.000125 AC: 19 AN: 152220 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000482

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: 0.000250

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000680 AC: 10 AN: 146972 AF XY: 0.0000638

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000164

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000254 AC: 351 AN: 1382194 Hom.: 0 Cov.: 28 AF XY: 0.000258 AC XY: 176 AN XY: 682340

African (AFR) AF: 0.00 AC: 0 AN: 31620

American (AMR) AF: 0.00 AC: 0 AN: 35796

Ashkenazi Jewish (ASJ) AF: 0.0000398 AC: 1 AN: 25110

East Asian (EAS) AF: 0.00 AC: 0 AN: 35956

South Asian (SAS) AF: 0.00 AC: 0 AN: 79070

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 35074

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5686

European-Non Finnish (NFE) AF: 0.000307 AC: 330 AN: 1076062

Other (OTH) AF: 0.000346 AC: 20 AN: 57820

GnomAD4 genome AF: 0.000125 AC: 19 AN: 152220 Hom.: 0 Cov.: 33 AF XY: 0.000108 AC XY: 8 AN XY: 74368

African (AFR) AF: 0.0000482 AC: 2 AN: 41454

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

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

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

European-Non Finnish (NFE) AF: 0.000250 AC: 17 AN: 68040

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000869 Hom.: 0

Bravo AF: 0.000155

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Alpha-methylacyl-CoA racemase deficiency Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.78
DANN	Benign	0.73
PhyloP100		-0.085
Mutation Taster		=100/0	polymorphism

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

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Other links and lift over

dbSNP: rs367582757; hg19: chr5-33988393;