Updates for c.14C>T:
2020-08-04 subclass changed from CFTR-RD to VCC




Variant NM_000492.4:c.14C>T


Variant details:
Name NM_000492.4:c.14C>T
Protein name NP_000483.3:p.(Pro5Leu)
Genomic name (hg19)     chr7:g.117120162C>T    UCSC    
Genomic name (hg38) chr7:g.117480108C>T    UCSC
#Exon/intron exon 1
Legacy Name P5L
Class disease-causing
Subclass varying clinical consequence
WT sequence GCCCGAGAGACCATGCAGAGGTCGC C TCTGGAAAAGGCCAGCGTTGTCTCC
Mutant sequence GCCCGAGAGACCATGCAGAGGTCGC T TCTGGAAAAGGCCAGCGTTGTCTCC

Other databases:
dbSNP
rs193922501



Pathogenicity predictors:

Functional studies:


Reference PMID Splicing mRNA level Maturation Localization Channel fonction (Cl-) Bicarbonate
Thelin et al, 2007 17235394 ✓
Gene et al, 2008 18306312 ✓ ✓ ✓


« ✓ » indicates the type of analysis performed and not the results


Response to modulators:


Modulator FDA approval EMA approval in vitro / ex vivo data clinical data
IVAnononono
TEZ-IVA yesnoyesno
ELX-TEZ-IVA yesnoyesno
VNZ-TEZ-DIVA yesnoyesno

clinical and functional data presented above are provided by Vertex


No patient found in CFTR-NGS catalogue


6 patients carrying this variant are reported in CFTR-France:

TOTAL NUMBER OF PATIENTS 6
CF 2
CFTR-RD2
  • CRS-NP  1
  • Other  1
Pending (NBS) 2




Color code:   non disease-causing <   likely benign <   VUS <   likely pathogenic <   disease-causing

Detailed genotypes:
Phenotype Patient ID Variant status Additional variants
Pending (NBS) 734heterozygoteCF-causing - Trans
Pending (NBS) 6039heterozygoteCF-causing- Undef
Other 757heterozygoteCF-causing- Undef
CF 5089heterozygoteCF-causing - Trans
CF 4776heterozygotevarying clinical consequence - Trans
CRS-NP 5130heterozygote


Color code:   non disease-causing <   likely benign <   VUS <   likely pathogenic <   disease-causing



            CFTR variants are clustered into five groups (click here for more details about the classification of variants):
  • CF-causing: when in trans with another CF-causing mutation, will result in CF.
  • CFTR-RD causing: when in trans with a CF-causing mutation, will result in CFTR-related disorders (CFTR-RD) such as chronic pancreatitis, bronchiectasis, CRS-NP (chronic rhinosinusitis with or without nasal polyposis) or CBAVD (congenital absence of vas deferens), according to Bombieri C et al., 2011.
  • Varying clinical consequence: when in trans with another CF-causing mutation, can either result in CF or in a CFTR-RD.
  • Non disease-causing: when in trans with a CF-causing mutation, will not cause CF, nor CFTR-RD.
  • VUS (Variant of unknown clinical significance): unclassified because of insufficient data.



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