1-235367444-C-T

Variant names:

• chr1-235367444-C-T
• rs886046147
• NM_003193.5:c.-92C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_003193.5(TBCE):​c.-92C>T variant causes a 5 prime UTR premature start codon gain 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: TBCE NM_003193.5 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.89
• Publications: 0 publications found

Genes affected

TBCE (HGNC:11582): (tubulin folding cofactor E) Cofactor E is one of four proteins (cofactors A, D, E, and C) involved in the pathway leading to correctly folded beta-tubulin from folding intermediates. Cofactors A and D are believed to play a role in capturing and stabilizing beta-tubulin intermediates in a quasi-native confirmation. Cofactor E binds to the cofactor D/beta-tubulin complex; interaction with cofactor C then causes the release of beta-tubulin polypeptides that are committed to the native state. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]

TBCE Gene-Disease associations (from GenCC):

• hypoparathyroidism-retardation-dysmorphism syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Orphanet, G2P
• early-onset progressive diffuse brain atrophy-microcephaly-muscle weakness-optic atrophy syndrome

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• encephalopathy, progressive, with amyotrophy and optic atrophy

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: PanelApp Australia, ClinGen, G2P, Ambry Genetics
• autosomal recessive Kenny-Caffey syndrome

  Inheritance: AR Classification: MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet

ENSG00000285053 (HGNC:):

ACMG classification

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=-0.91).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003193.5. 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
	TBCE	NM_003193.5	MANE Select	c.-92C>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 17	NP_003184.1	Q15813-1
	TBCE	NM_003193.5	MANE Select	c.-92C>T		5_prime_UTR	Exon 1 of 17	NP_003184.1	Q15813-1
	TBCE	NM_001287801.2		c.-92C>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 18	NP_001274730.1	Q15813-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBCE	ENST00000642610.2	MANE Select	c.-92C>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 17	ENSP00000494796.1	Q15813-1
	ENSG00000285053	ENST00000647186.1		c.-92C>T		5_prime_UTR_premature_start_codon_gain	Exon 3 of 19	ENSP00000494775.1
	TBCE	ENST00000366601.8	TSL:1	c.-92C>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 15	ENSP00000355560.4	A0A2U3TZJ6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 528 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 328

African (AFR) AF: 0.00 AC: 0 AN: 2

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AC: 0 AN: 0

South Asian (SAS) AF: 0.00 AC: 0 AN: 2

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 434

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 72

Other (OTH) AF: 0.00 AC: 0 AN: 16

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.84
DANN	Benign	0.69
PhyloP100		-1.9
PromoterAI		-0.031	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.1

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

Other links and lift over

dbSNP: rs886046147; hg19: chr1-235530759; COSMIC: COSV64005710; COSMIC: COSV64005710;