Updates for c.350G>C:
2024-08-08 Class changed from VUS to disease-causing
2024-08-13 Class updated from VUS3 to disease-causing/ NULL
2024-10-14 Class updated from VUS3 to Likely pathogenic/probably CF




Variant NM_000492.4:c.350G>C


Variant details:
Name NM_000492.4:c.350G>C
Protein name NP_000483.3:p.(Arg117Pro)
Genomic name (hg19)     chr7:g.117171029G>C    UCSC    
Genomic name (hg38) chr7:g.117530975G>C    UCSC
#Exon/intron exon 4
Legacy Name R117P
Class likely pathogenic
Subclass likely CF
WT sequence TATGACCCGGATAACAAGGAGGAAC G CTCTATCGCGATTTATCTAGGCATA
Mutant sequence TATGACCCGGATAACAAGGAGGAAC C CTCTATCGCGATTTATCTAGGCATA

Other databases:
dbSNP
rs78655421



Pathogenicity predictors:

Functional studies:         +


Reference PMID Splicing mRNA level Maturation Localization Channel fonction (Cl-) Bicarbonate
Hammerle et al, 2001 11278813 ✓ ✓ ✓


« ✓ » 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
VNZ-TEZ-DIVA yesnoyesno

clinical and functional data presented above are provided by Vertex


No patient found in CFTR-NGS catalogue


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

TOTAL NUMBER OF PATIENTS 1
CF 1




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

Detailed genotypes:
Phenotype Patient ID Variant status Additional variants
CF 5790heterozygoteCF-causing- Undef


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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