Genetic Variant TUBGCP2:p.Pro895Pro (chr10-133279790-G-A) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_StrongBP6BP7

The NM_006659.4(TUBGCP2):c.2685C>T(p.Pro895Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000016 in 1,565,930 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

TUBGCP2
NM_006659.4 synonymous

Scores

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: 2.60

Publications

1 publications found

Variant links:

Genes affected

TUBGCP2 (HGNC:18599): (tubulin gamma complex component 2) Predicted to enable gamma-tubulin binding activity. Predicted to contribute to microtubule minus-end binding activity. Involved in brain development and neuron migration. Located in centrosome and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

TUBGCP2 Gene-Disease associations (from GenCC):

Norman-Roberts syndrome
Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia
pachygyria, microcephaly, developmental delay, and dysmorphic facies, with or without seizures
Inheritance: AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

TUBGCP2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 10-133279790-G-A is Benign according to our data. Variant chr10-133279790-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3042972.Status of the report is no_assertion_criteria_provided, 0 stars.

BP7

Synonymous conserved (PhyloP=2.61 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TUBGCP2	NM_006659.4 link	c.2685C>T	p.Pro895Pro	synonymous_variant	Exon 18 of 18	ENST00000252936.8	NP_006650.1	Q9BSJ2-1Q53EQ3
TUBGCP2	NM_001256617.2 link	c.2769C>T	p.Pro923Pro	synonymous_variant	Exon 19 of 19		NP_001243546.1	Q9BSJ2-4
TUBGCP2	NM_001256618.2 link	c.2295C>T	p.Pro765Pro	synonymous_variant	Exon 17 of 17		NP_001243547.1	Q9BSJ2-3
TUBGCP2	NR_046330.2 link	n.3405C>T		non_coding_transcript_exon_variant	Exon 18 of 18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TUBGCP2	ENST00000252936.8 link	c.2685C>T	p.Pro895Pro	synonymous_variant	Exon 18 of 18	2	NM_006659.4	ENSP00000252936.3		Q9BSJ2-1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152250

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000964

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000926

AC:

AN:

172874

AF XY:

0.0000962

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00120

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000141

AC:

AN:

1413562

Hom.:

Cov.:

AF XY:

0.0000172

AC XY:

AN XY:

699156

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32110

American (AMR)

AF:

0.00

AC:

AN:

37578

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25316

East Asian (EAS)

AF:

0.000300

AC:

AN:

36616

South Asian (SAS)

AF:

0.0000619

AC:

AN:

80796

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49192

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5704

European-Non Finnish (NFE)

AF:

0.00000276

AC:

AN:

1087696

Other (OTH)

AF:

0.0000171

AC:

AN:

58554

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152368

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74514

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41598

American (AMR)

AF:

0.00

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000966

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.515

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

TUBGCP2-related disorder

Benign:1

Feb 04, 2023

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

3.6

(source)

DANN

Benign

0.65

PhyloP100

2.6

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

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10-133279790-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over