8-67158499-C-T

Position:

• chr8-67158499-C-T

Variant summary

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

The NM_001382391.1(CSPP1):​c.2294C>T​(p.Ala765Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,460,178 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A765E) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: CSPP1 NM_001382391.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.55

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]

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=0.16941449).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CSPP1	NM_001382391.1	c.2294C>T	p.Ala765Val	missense_variant	20/31	ENST00000678616.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CSPP1	ENST00000678616.1	c.2294C>T	p.Ala765Val	missense_variant	20/31		NM_001382391.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000403 AC: 1 AN: 248000 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 134636

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000891

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1460178 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726330

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	23
DANN	Uncertain	1.0
Eigen	Benign	-0.0076
Eigen_PC	Benign	0.039
FATHMM_MKL	Benign	0.66	D
LIST_S2	Uncertain	0.90	D;D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.17	T;T
MetaSVM	Benign	-0.91	T
MutationTaster	Benign	0.60	N;N;N
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-1.6	N;N
REVEL	Benign	0.032
Sift	Benign	0.094	T;T
Sift4G	Benign	0.079	T;T
Polyphen		0.68	P;P
Vest4		0.44
MVP		0.45
MPC		0.44
ClinPred		0.78	D
GERP RS		1.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
gMVP		0.20

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

Other links and lift over

dbSNP: rs376549634; hg19: chr8-68070734; COSMIC: COSV99138569;