Variant NM_000492.4:c.273+1G>A


Variant details:
Name NM_000492.4:c.273+1G>A
Protein name NP_000483.3:p.(=)
Genomic name (hg19) chr7:g.117149197G>A    UCSC    
#Exon/intron intron 3
Legacy Name 405+1G>A
Class disease-causing
Subclass CF-causing
WT sequence CTATGGAATCTTTTTATATTTAGGG G TAAGGATCTCATTTGTACATTCATT
Mutant sequence CTATGGAATCTTTTTATATTTAGGG A TAAGGATCTCATTTGTACATTCATT

Other databases:
dbSNP
rs121908791







Pathogenicity predictors:

Not found





No patient found in CFTR-NGS catalogue


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

TOTAL NUMBER OF PATIENTS 5
CF 3
CFTR-RD1
  • Other  1
Fetal bowel anomalies 1




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

Detailed genotypes:
Phenotype Patient ID Variant status Additional variants
Fetal bowel anomalies 916heterozygoteCF-causing - Trans
CF 5042heterozygotevarying clinical consequence- Undef
CF 2438heterozygoteCF-causing- Undef
CF 4938heterozygoteCF-causing - Trans
Other 5048heterozygotevarying clinical consequence- Undef


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



            CFTR variants are clustered into five groups:
  • 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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