X-38352726-C-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_000531.6(OTC):​c.30C>T​(p.Asn10=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000914 in 1,094,001 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: not found (cov: 23)
Exomes 𝑓: 9.1e-7 ( 0 hom. 0 hem. )

Consequence

OTC
NM_000531.6 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.00700
Variant links:
Genes affected
OTC (HGNC:8512): (ornithine transcarbamylase) This nuclear gene encodes a mitochondrial matrix enzyme. The encoded protein is involved in the urea cycle which functions to detoxify ammonia into urea for excretion. Mutations in this enzyme lead to ornithine transcarbamylase deficiency, which causes hyperammonemia. [provided by RefSeq, May 2022]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.64).
BP6
Variant X-38352726-C-T is Benign according to our data. Variant chrX-38352726-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2756484.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=-0.007 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
OTCNM_000531.6 linkuse as main transcriptc.30C>T p.Asn10= synonymous_variant 1/10 ENST00000039007.5
OTCNM_001407092.1 linkuse as main transcriptc.30C>T p.Asn10= synonymous_variant 3/12
OTCXM_017029556.2 linkuse as main transcriptc.30C>T p.Asn10= synonymous_variant 1/9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
OTCENST00000039007.5 linkuse as main transcriptc.30C>T p.Asn10= synonymous_variant 1/101 NM_000531.6 P1
OTCENST00000488812.1 linkuse as main transcriptn.122C>T non_coding_transcript_exon_variant 1/65
OTCENST00000643344.1 linkuse as main transcriptc.30C>T p.Asn10= synonymous_variant, NMD_transcript_variant 1/11

Frequencies

GnomAD3 genomes
Cov.:
23
GnomAD4 exome
AF:
9.14e-7
AC:
1
AN:
1094001
Hom.:
0
Cov.:
28
AF XY:
0.00
AC XY:
0
AN XY:
359523
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000119
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
23

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Ornithine carbamoyltransferase deficiency Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeAug 30, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.64
CADD
Benign
6.5
DANN
Benign
0.70

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-38211979; API