10-1042635-T-C

Variant names:

• chr10-1042635-T-C
• rs750505686
• NM_004508.4:c.534A>G

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_004508.4(IDI1):​c.534A>G​(p.Glu178Glu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,640 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: 6.8e-7 (0 hom.)
• Consequence: IDI1 NM_004508.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.71
• Publications: 0 publications found

Genes affected

IDI1 (HGNC:5387): (isopentenyl-diphosphate delta isomerase 1) IDI1 encodes a peroxisomally-localized enzyme that catalyzes the interconversion of isopentenyl diphosphate (IPP) to its highly electrophilic isomer, dimethylallyl diphosphate (DMAPP), which are the substrates for the successive reaction that results in the synthesis of farnesyl diphosphate and, ultimately, cholesterol. It has been shown in peroxisomal deficiency diseases such as Zellweger syndrome and neonatal adrenoleukodystrophy that there is reduction in IPP isomerase activity. [provided by RefSeq, Jul 2008]

IDI2-AS1 (HGNC:30885): (IDI2 antisense RNA 1)

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=-0.57).
• BP7: Synonymous conserved (PhyloP=1.71 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004508.4. 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
	IDI1	NM_004508.4	MANE Select	c.534A>G	p.Glu178Glu	synonymous	Exon 4 of 5	NP_004499.2
	IDI1	NM_001317955.2		c.366A>G	p.Glu122Glu	synonymous	Exon 5 of 6	NP_001304884.1	A0A8Q3WKR8
	IDI1	NM_001317956.2		c.366A>G	p.Glu122Glu	synonymous	Exon 4 of 5	NP_001304885.1	A0A8Q3WKR8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IDI1	ENST00000381344.8	TSL:1 MANE Select	c.534A>G	p.Glu178Glu	synonymous	Exon 4 of 5	ENSP00000370748.3	Q13907-2
	IDI1	ENST00000491735.1	TSL:1	n.461A>G		non_coding_transcript_exon	Exon 3 of 4
	IDI2-AS1	ENST00000420381.5	TSL:1	n.518-894T>C		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461640 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727148

African (AFR) AF: 0.0000299 AC: 1 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39674

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53396

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5728

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111882

Other (OTH) AF: 0.00 AC: 0 AN: 60378

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
CADD	Benign	6.0
DANN	Benign	0.59
PhyloP100		1.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs750505686; hg19: chr10-1088575;