5-10250285-C-G

Variant names:

• chr5-10250285-C-G
• rs770097768
• NM_012073.5:c.-56C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_012073.5(CCT5):​c.-56C>G variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,459,968 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: CCT5 NM_012073.5 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0100
• Publications: 0 publications found

Genes affected

CCT5 (HGNC:1618): (chaperonin containing TCP1 subunit 5) The protein encoded by this gene is a molecular chaperone that is a member of the chaperonin containing TCP1 complex (CCT), also known as the TCP1 ring complex (TRiC). This complex consists of two identical stacked rings, each containing eight different proteins. Unfolded polypeptides enter the central cavity of the complex and are folded in an ATP-dependent manner. The complex folds various proteins, including actin and tubulin. Mutations in this gene cause hereditary sensory and autonomic neuropathy with spastic paraplegia (HSNSP). Alternative splicing results in multiple transcript variants. Related pseudogenes have been identified on chromosomes 5 and 13. [provided by RefSeq, Apr 2015]

CCT5 Gene-Disease associations (from GenCC):

• hereditary sensory and autonomic neuropathy with spastic paraplegia

  Inheritance: AR, Unknown Classification: SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
• complex neurodevelopmental disorder

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012073.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CCT5	NM_012073.5	MANE Select	c.-56C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 11	NP_036205.1	P48643-1
	CCT5	NM_012073.5	MANE Select	c.-56C>G		5_prime_UTR	Exon 1 of 11	NP_036205.1	P48643-1
	CCT5	NM_001306154.2		c.-56C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 10	NP_001293083.1	E7ENZ3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CCT5	ENST00000280326.9	TSL:1 MANE Select	c.-56C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 11	ENSP00000280326.4	P48643-1
	CCT5	ENST00000280326.9	TSL:1 MANE Select	c.-56C>G		5_prime_UTR	Exon 1 of 11	ENSP00000280326.4	P48643-1
	CCT5	ENST00000964556.1		c.-56C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 11	ENSP00000634615.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1459968 Hom.: 0 Cov.: 49 AF XY: 0.00000275 AC XY: 2 AN XY: 726208

African (AFR) AF: 0.00 AC: 0 AN: 33464

American (AMR) AF: 0.00 AC: 0 AN: 44532

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26066

East Asian (EAS) AF: 0.00 AC: 0 AN: 39646

South Asian (SAS) AF: 0.00 AC: 0 AN: 86024

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52782

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111356

Other (OTH) AF: 0.00 AC: 0 AN: 60336

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.38
BayesDel_noAF	Benign	-0.75
CADD	Benign	7.2
DANN	Benign	0.60
PhyloP100		-0.010
PromoterAI		0.017	Neutral
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

Other links and lift over

dbSNP: rs770097768; hg19: chr5-10250397;