Genetic Variant CAMSAP2:p.Ala146Thr (chr1-200807412-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_203459.4(CAMSAP2):c.436G>A(p.Ala146Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000142 in 1,411,640 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CAMSAP2
NM_203459.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.60

Variant links:

Genes affected

CAMSAP2 (HGNC:29188): (calmodulin regulated spectrin associated protein family member 2) Enables microtubule minus-end binding activity. Involved in several processes, including axon development; regulation of dendrite development; and regulation of organelle organization. Located in cytosol and microtubule end. Colocalizes with Golgi apparatus; centrosome; and microtubule minus-end. [provided by Alliance of Genome Resources, Apr 2022]

CAMSAP2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CAMSAP2	NM_203459.4 link	c.436G>A	p.Ala146Thr	missense_variant	Exon 3 of 17	ENST00000358823.7	NP_982284.1	Q08AD1-3B3KTI4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CAMSAP2	ENST00000358823.7 link	c.436G>A	p.Ala146Thr	missense_variant	Exon 3 of 17	5	NM_203459.4	ENSP00000351684.2	Q08AD1-3
CAMSAP2	ENST00000236925.8 link	c.436G>A	p.Ala146Thr	missense_variant	Exon 3 of 18	1		ENSP00000236925.4	Q08AD1-1
CAMSAP2	ENST00000413307.6 link	c.436G>A	p.Ala146Thr	missense_variant	Exon 3 of 17	1		ENSP00000416800.2	Q08AD1-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000405

AC:

AN:

246690

Hom.:

AF XY:

0.00

AC XY:

AN XY:

133358

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000557

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000142

AC:

AN:

1411640

Hom.:

Cov.:

AF XY:

0.00000142

AC XY:

AN XY:

702322

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000282

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.26e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 12, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.436G>A (p.A146T) alteration is located in exon 3 (coding exon 3) of the CAMSAP2 gene. This alteration results from a G to A substitution at nucleotide position 436, causing the alanine (A) at amino acid position 146 to be replaced by a threonine (T). 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

Uncertain

0.47

BayesDel_addAF

Uncertain

0.020

BayesDel_noAF

Uncertain

-0.040

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.44

.;.;T

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D;D

M_CAP

Benign

0.028

MetaRNN

Uncertain

0.67

D;D;D

MetaSVM

Benign

-0.91

MutationAssessor

Pathogenic

3.0

M;M;M

PrimateAI

Uncertain

0.69

PROVEAN

Uncertain

-3.1

D;D;D

REVEL

Benign

0.25

Sift

Uncertain

0.012

D;D;D

Sift4G

Uncertain

0.0060

D;D;D

Polyphen

0.94

P;D;D

Vest4

0.87

MutPred

0.47

Gain of sheet (P = 0.0344);Gain of sheet (P = 0.0344);Gain of sheet (P = 0.0344);

MVP

0.41

MPC

0.92

ClinPred

0.94

GERP RS

5.2

Varity_R

0.52

gMVP

0.66

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over