9-91214128-ACT-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_001698.3(AUH):c.*218_*219del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000135 in 502,684 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000059 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00017 (2 hom.)
• Consequence: AUH NM_001698.3 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.132

Genes affected

AUH (HGNC:890): (AU RNA binding methylglutaconyl-CoA hydratase) This gene encodes bifunctional mitochondrial protein that has both RNA-binding and hydratase activities. The encoded protein is a methylglutaconyl-CoA hydratase that catalyzes the hydration of 3-methylglutaconyl-CoA to 3-hydroxy-3-methyl-glutaryl-CoA, a critical step in the leucine degradation pathway. This protein also binds AU-rich elements (AREs) found in the 3' UTRs of rapidly decaying mRNAs including c-fos, c-myc and granulocyte/ macrophage colony stimulating factor. ARE elements are involved in directing RNA to rapid degradation and deadenylation. This protein is localizes to the mitochondrial matrix and the inner mitochondrial membrane and may be involved in mitochondrial protein synthesis. Mutations in this gene are the cause of 3-methylglutaconic aciduria, type I. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2015]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• BS1: Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.000168 (59/350330) while in subpopulation MID AF= 0.00669 (14/2092). AF 95% confidence interval is 0.00405. There are 2 homozygotes in gnomad4_exome. There are 31 alleles in male gnomad4_exome subpopulation. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AUH	NM_001698.3	c.*218_*219del		3_prime_UTR_variant	10/10	ENST00000375731.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AUH	ENST00000375731.9	c.*218_*219del		3_prime_UTR_variant	10/10	1	NM_001698.3	P1
AUH	ENST00000303617.5	c.*218_*219del		3_prime_UTR_variant	9/9	1
AUH	ENST00000473695.1	n.462_463del		non_coding_transcript_exon_variant	3/3	2

Frequencies

GnomAD3 genomes AF: 0.0000723 AC: 11 AN: 152236 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000168 AC: 59 AN: 350330 Hom.: 2 AF XY: 0.000167 AC XY: 31 AN XY: 185264

Gnomad4 AFR exome AF: 0.000283

Gnomad4 AMR exome AF: 0.000484

Gnomad4 ASJ exome AF: 0.000458

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000138

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000996

Gnomad4 OTH exome AF: 0.000197

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152354 Hom.: 0 Cov.: 32 AF XY: 0.0000805 AC XY: 6 AN XY: 74504

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.000196

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000214 Hom.: 0

Bravo AF: 0.000117

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

3-methylglutaconic aciduria type 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

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

Publications

LitVar

Other links and lift over

dbSNP: rs1057515675; hg19: chr9-93976410;