chr8-67105943-A-G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PP3_ModerateBP6BS1

The NM_001382391.1(CSPP1):c.1061A>G(p.Asp354Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00015 in 1,595,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/24 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00082 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000079 ( 0 hom. )

Consequence

CSPP1
NM_001382391.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 0.989

Publications

1 publications found

Variant links:

Genes affected

CSPP1 (HGNC:26193): (centrosome and spindle pole associated protein 1) This gene encodes a centrosome and spindle pole associated protein. The encoded protein plays a role in cell-cycle progression and spindle organization, regulates cytokinesis, interacts with Nephrocystin 8 and is required for cilia formation. Mutations in this gene result in primary cilia abnormalities and classical Joubert syndrome. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Apr 2014]

CSPP1 Gene-Disease associations (from GenCC):

Joubert syndrome 21
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P
Joubert syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Joubert syndrome with Jeune asphyxiating thoracic dystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Meckel syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CSPP1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

BP6

Variant 8-67105943-A-G is Benign according to our data. Variant chr8-67105943-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 579663.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000821 (125/152280) while in subpopulation AFR AF = 0.00291 (121/41556). AF 95% confidence interval is 0.00249. There are 0 homozygotes in GnomAd4. There are 55 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001382391.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CSPP1	NM_001382391.1	MANE Select	c.1061A>G	p.Asp354Gly	missense	Exon 9 of 31	NP_001369320.1
CSPP1	NM_001364869.1		c.1169A>G	p.Asp390Gly	missense	Exon 9 of 30	NP_001351798.1
CSPP1	NM_024790.7		c.1088A>G	p.Asp363Gly	missense	Exon 8 of 29	NP_079066.5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CSPP1	ENST00000678616.1	MANE Select	c.1061A>G	p.Asp354Gly	missense	Exon 9 of 31	ENSP00000504733.1
CSPP1	ENST00000262210.11	TSL:1	c.1169A>G	p.Asp390Gly	missense	Exon 9 of 30	ENSP00000262210.6
CSPP1	ENST00000519668.1	TSL:1	c.206A>G	p.Asp69Gly	missense	Exon 6 of 26	ENSP00000430092.1

Frequencies

GnomAD3 genomes

AF:

0.000821

AC:

125

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00292

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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:

0.000177

AC:

AN:

249116

AF XY:

0.0000888

show subpopulations

Gnomad AFR exome

AF:

0.00233

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.0000790

AC:

114

AN:

1443310

Hom.:

Cov.:

AF XY:

0.0000667

AC XY:

AN XY:

719336

show subpopulations

African (AFR)

AF:

0.00287

AC:

AN:

33076

American (AMR)

AF:

0.000179

AC:

AN:

44674

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26006

East Asian (EAS)

AF:

0.00

AC:

AN:

39554

South Asian (SAS)

AF:

0.00

AC:

AN:

85844

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53384

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5734

European-Non Finnish (NFE)

AF:

0.00000183

AC:

AN:

1095304

Other (OTH)

AF:

0.000134

AC:

AN:

59734

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.454

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000821

AC:

125

AN:

152280

Hom.:

Cov.:

AF XY:

0.000739

AC XY:

AN XY:

74440

show subpopulations

African (AFR)

AF:

0.00291

AC:

121

AN:

41556

American (AMR)

AF:

0.000261

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000352

Hom.:

Bravo

AF:

0.000793

ESP6500AA

AF:

0.00191

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000199

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

May 30, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis indicates that this missense variant does not alter protein structure/function; In silico analysis supports a deleterious effect on splicing; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 35304488)

Joubert syndrome 21

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.077

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.41

CADD

Benign

(source)

DANN

Benign

0.94

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.72

FATHMM_MKL

Benign

0.058

LIST_S2

Benign

0.57

M_CAP

Benign

0.067

MetaRNN

Benign

0.0055

MetaSVM

Benign

-0.83

PhyloP100

0.99

PrimateAI

Benign

0.30

PROVEAN

Benign

-1.1

REVEL

Benign

0.066

Sift

Benign

0.27

Sift4G

Benign

0.33

Polyphen

0.050

Vest4

0.064

MVP

0.46

MPC

0.16

ClinPred

0.014

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.2

gMVP

0.070

Mutation Taster

=89/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.98

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.98

Position offset: -1

DS_DL_spliceai

0.58

Position offset: 32

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over