3-49806114-G-T

Variant names:

• chr3-49806114-G-T
• NM_003335.3:c.2767C>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003335.3(UBA7):​c.2767C>A​(p.Gln923Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: UBA7 NM_003335.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.206

Genes affected

UBA7 (HGNC:12471): (ubiquitin like modifier activating enzyme 7) The modification of proteins with ubiquitin is an important cellular mechanism for targeting abnormal or short-lived proteins for degradation. Ubiquitination involves at least three classes of enzymes: ubiquitin-activating enzymes, or E1s, ubiquitin-conjugating enzymes, or E2s, and ubiquitin-protein ligases, or E3s. This gene encodes a member of the E1 ubiquitin-activating enzyme family. The encoded enzyme is a retinoid target that triggers promyelocytic leukemia (PML)/retinoic acid receptor alpha (RARalpha) degradation and apoptosis in acute promyelocytic leukemia, where it is involved in the conjugation of the ubiquitin-like interferon-stimulated gene 15 protein. [provided by RefSeq, Jul 2008]

MIR5193 (HGNC:43534): (microRNA 5193) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12671193).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UBA7	NM_003335.3	c.2767C>A	p.Gln923Lys	missense_variant	Exon 22 of 24	ENST00000333486.4	NP_003326.2
MIR5193	NR_049825.1	n.*23C>A		downstream_gene_variant
MIR5193	unassigned_transcript_625	n.*51C>A		downstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UBA7	ENST00000333486.4	c.2767C>A	p.Gln923Lys	missense_variant	Exon 22 of 24	1	NM_003335.3	ENSP00000333266.3
UBA7	ENST00000497908.1	n.177C>A		non_coding_transcript_exon_variant	Exon 1 of 2	2
MIR5193	ENST00000584510.1	n.*23C>A		downstream_gene_variant		6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1448694 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 719136

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Apr 04, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2767C>A (p.Q923K) alteration is located in exon 22 (coding exon 22) of the UBA7 gene. This alteration results from a C to A substitution at nucleotide position 2767, causing the glutamine (Q) at amino acid position 923 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.095
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	15
DANN	Benign	0.94
DEOGEN2	Benign	0.10	T
Eigen	Benign	-0.41
Eigen_PC	Benign	-0.37
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.61	T
M_CAP	Benign	0.022	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.1	M
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-0.70	N
REVEL	Benign	0.081
Sift	Benign	0.15	T
Sift4G	Benign	0.14	T
Polyphen		0.14	B
Vest4		0.22
MutPred		0.63		Gain of ubiquitination at Q923 (P = 0.0258);
MVP		0.20
MPC		0.30
ClinPred		0.22	T
GERP RS		3.8
Varity_R		0.10
gMVP		0.53

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: chr3-49843547;