chr9-120390029-T-C

Position:

• chr9-120390029-T-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_018249.6(CDK5RAP2):​c.5579-242A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00562 in 538,004 control chromosomes in the GnomAD database, including 73 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.014 (60 hom., cov: 33)
  • Exomes 𝑓: 0.0022 (13 hom.)
• Consequence: CDK5RAP2 NM_018249.6 intron
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -1.35

Genes affected

CDK5RAP2 (HGNC:18672): (CDK5 regulatory subunit associated protein 2) This gene encodes a regulator of CDK5 (cyclin-dependent kinase 5) activity. The protein encoded by this gene is localized to the centrosome and Golgi complex, interacts with CDK5R1 and pericentrin (PCNT), plays a role in centriole engagement and microtubule nucleation, and has been linked to primary microcephaly and Alzheimer's disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2013]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.94).
• BP6: Variant 9-120390029-T-C is Benign according to our data. Variant chr9-120390029-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 1215159.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0143 (2175/152234) while in subpopulation AFR AF= 0.0492 (2045/41538). AF 95% confidence interval is 0.0475. There are 60 homozygotes in gnomad4. There are 1087 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 60 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDK5RAP2	NM_018249.6	c.5579-242A>G		intron_variant		ENST00000349780.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDK5RAP2	ENST00000349780.9	c.5579-242A>G		intron_variant		1	NM_018249.6	P4

Frequencies

GnomAD3 genomes AF: 0.0143 AC: 2169 AN: 152116 Hom.: 59 Cov.: 33

Gnomad AFR AF: 0.0492

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00596

Gnomad ASJ AF: 0.00317

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000208

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000176

Gnomad OTH AF: 0.00764

GnomAD4 exome AF: 0.00219 AC: 846 AN: 385770 Hom.: 13 Cov.: 0 AF XY: 0.00175 AC XY: 358 AN XY: 204086

Gnomad4 AFR exome AF: 0.0501

Gnomad4 AMR exome AF: 0.00419

Gnomad4 ASJ exome AF: 0.00271

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000259

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000228

Gnomad4 OTH exome AF: 0.00403

GnomAD4 genome AF: 0.0143 AC: 2175 AN: 152234 Hom.: 60 Cov.: 33 AF XY: 0.0146 AC XY: 1087 AN XY: 74418

Gnomad4 AFR AF: 0.0492

Gnomad4 AMR AF: 0.00595

Gnomad4 ASJ AF: 0.00317

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000176

Gnomad4 OTH AF: 0.00756

Alfa AF: 0.0126 Hom.: 4

Bravo AF: 0.0169

Asia WGS AF: 0.00375 AC: 13 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Apr 07, 2019	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.94
CADD	Benign	0.27
DANN	Benign	0.51
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2

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: rs113524889; hg19: chr9-123152307;