Genetic Variant ENST00000703936.1:c.2139-818C>T (chr3-49029624-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000703936.1(ENSG00000290315):c.2139-818C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000227 in 523,886 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: 𝑓 0.00016 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00026 ( 0 hom. )

Consequence

ENSG00000290315
ENST00000703936.1 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.00400

Publications

1 publications found

Variant links:

Genes affected

ENSG00000290315 (HGNC:):

ENSG00000290315 links:

IMPDH2 (HGNC:6053): (inosine monophosphate dehydrogenase 2) This gene encodes the rate-limiting enzyme in the de novo guanine nucleotide biosynthesis. It is thus involved in maintaining cellular guanine deoxy- and ribonucleotide pools needed for DNA and RNA synthesis. The encoded protein catalyzes the NAD-dependent oxidation of inosine-5'-monophosphate into xanthine-5'-monophosphate, which is then converted into guanosine-5'-monophosphate. This gene is up-regulated in some neoplasms, suggesting it may play a role in malignant transformation. [provided by RefSeq, Jul 2008]

IMPDH2 links:

QRICH1 (HGNC:24713): (glutamine rich 1) Enables DNA binding activity. Involved in several processes, including PERK-mediated unfolded protein response; intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress; and positive regulation of transcription, DNA-templated. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

QRICH1 Gene-Disease associations (from GenCC):

syndromic intellectual disability
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
Ververi-Brady syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Illumina
schizophrenia
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

QRICH1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000703936.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
IMPDH2	NM_000884.3	MANE Select	c.-274C>T	upstream_gene	N/A	NP_000875.2
QRICH1	NM_198880.3	MANE Select	c.*828C>T	downstream_gene	N/A	NP_942581.1
IMPDH2	NM_001410759.1		c.-274C>T	upstream_gene	N/A	NP_001397688.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
ENSG00000290315	ENST00000703936.1		c.2139-818C>T	intron	N/A	ENSP00000515567.1
ENSG00000272434	ENST00000607245.1	TSL:6	n.309G>A	non_coding_transcript_exon	Exon 1 of 1
ENSG00000290315	ENST00000703937.1		n.*828C>T	non_coding_transcript_exon	Exon 12 of 25	ENSP00000515568.1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00317

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.000956

GnomAD4 exome

AF:

0.000256

AC:

AN:

371652

Hom.:

Cov.:

AF XY:

0.000281

AC XY:

AN XY:

195666

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

10912

American (AMR)

AF:

0.0000670

AC:

AN:

14922

Ashkenazi Jewish (ASJ)

AF:

0.00495

AC:

AN:

11526

East Asian (EAS)

AF:

0.00

AC:

AN:

24214

South Asian (SAS)

AF:

0.0000223

AC:

AN:

44844

European-Finnish (FIN)

AF:

0.00

AC:

AN:

22472

Middle Eastern (MID)

AF:

0.000515

AC:

AN:

1940

European-Non Finnish (NFE)

AF:

0.000137

AC:

AN:

219268

Other (OTH)

AF:

0.000232

AC:

AN:

21554

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

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:

0.000158

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74384

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41464

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00317

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

68046

Other (OTH)

AF:

0.000956

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000193

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

1.1

(source)

DANN

Benign

0.79

PhyloP100

0.0040

PromoterAI

-0.041

Neutral

(source)

Splicing

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

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