dbSNP rs66539932: ENSG00000302195:n.662G>A (chr7-128410202-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

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

The ENST00000784862.1(ENSG00000302195):n.662G>A variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000774 in 297,084 control chromosomes in the GnomAD database, including 1 homozygotes. 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: 𝑓 0.000092 ( 1 hom., cov: 33)

Exomes 𝑓: 0.000062 ( 0 hom. )

Consequence

ENSG00000302195
ENST00000784862.1 non_coding_transcript_exon

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.984

Publications

0 publications found

Variant links:

Genes affected

ENSG00000302195 (HGNC:):

ENSG00000302195 links:

IMPDH1 (HGNC:6052): (inosine monophosphate dehydrogenase 1) The protein encoded by this gene acts as a homotetramer to regulate cell growth. The encoded protein is an enzyme that catalyzes the synthesis of xanthine monophosphate (XMP) from inosine-5'-monophosphate (IMP). This is the rate-limiting step in the de novo synthesis of guanine nucleotides. Defects in this gene are a cause of retinitis pigmentosa type 10 (RP10). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

IMPDH1 Gene-Disease associations (from GenCC):

IMPDH1-related retinopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
Leber congenital amaurosis 11
Inheritance: AD Classification: DEFINITIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P
retinitis pigmentosa 10
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
Leber congenital amaurosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
retinitis pigmentosa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

IMPDH1 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript ENST00000784862.1, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.77).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000784862.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
IMPDH1	NM_000883.4	MANE Select	c.-301G>A	upstream_gene	N/A	NP_000874.2
IMPDH1	NM_001102605.2		c.-301G>A	upstream_gene	N/A	NP_001096075.1	P20839-5
IMPDH1	NM_001142576.2		c.-301G>A	upstream_gene	N/A	NP_001136048.1	P20839-7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
ENSG00000302195	ENST00000784862.1		n.662G>A	non_coding_transcript_exon	Exon 3 of 3
IMPDH1	ENST00000338791.11	TSL:2 MANE Select	c.-301G>A	upstream_gene	N/A	ENSP00000345096.6	P20839-6
IMPDH1	ENST00000348127.11	TSL:1	c.-301G>A	upstream_gene	N/A	ENSP00000265385.8	P20839-3

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00154

Gnomad SAS

AF:

0.000827

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000622

AC:

AN:

144736

Hom.:

Cov.:

AF XY:

0.0000823

AC XY:

AN XY:

72936

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

4460

American (AMR)

AF:

0.00

AC:

AN:

3960

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

5624

East Asian (EAS)

AF:

0.000386

AC:

AN:

12960

South Asian (SAS)

AF:

0.00103

AC:

AN:

1944

European-Finnish (FIN)

AF:

0.00

AC:

AN:

11442

Middle Eastern (MID)

AF:

0.00

AC:

AN:

766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

93586

Other (OTH)

AF:

0.000200

AC:

AN:

9994

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.569

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000919

AC:

AN:

152348

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74508

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41590

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00154

AC:

AN:

5178

South Asian (SAS)

AF:

0.000827

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000110

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

4.9

(source)

DANN

Benign

0.68

PhyloP100

-0.98

PromoterAI

0.039

Neutral

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over