Variant NM_000492.4:c.3285A>T


Variant details:
Name NM_000492.4:c.3285A>T
Protein name NP_000483.3:p.(=)
Genomic name (hg19) chr7:g.117251780A>T    UCSC    gnomAD
#Exon/intron exon 20
Legacy Name T1095T (3417A/T)
Class VUS
Subclass VUS3
WT sequence CCAACTGGTTCTTGTACCTGTCAAC A CTGCGCTGGTTCCAAATGAGAATAG
Mutant sequence CCAACTGGTTCTTGTACCTGTCAAC T CTGCGCTGGTTCCAAATGAGAATAG






External sources:

Not found		dbSNP
rs1800118
Not found







No patient found in CFTR-NGS catalogue


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

TOTAL NUMBER OF PATIENTS 10
Asymptomatic compound heterozygote 2
CF 3
CFTR-RD4
  • Bronchiectasis  2
  • Pancreatitis  2
Pending (NBS) 1



Detailed genotypes:
Phenotype Patient ID Variant status Additional variants
CF 204heterozygoteCF-causing- Undef
CF-causing- Undef
CF 3205heterozygoteCF-causing- Undef
CF-causing- Undef
CF 3142heterozygoteCF-causing- Undef
CF-causing- Undef
Bronchiectasis 2373heterozygoteVUS1- Undef
Bronchiectasis 921heterozygoteCF-causing - Trans
Asymptomatic compound heterozygote 5279heterozygoteCF-causing - Trans
Asymptomatic compound heterozygote 5133heterozygoteCFTR-RD-causing- Undef
Pending (NBS) 1253heterozygoteCFTR-RD-causing- Undef
CF-causing- Undef
Pancreatitis 3060heterozygoteCFTR-RD-causing- Undef
Pancreatitis 5155heterozygoteCFTR-RD-causing- Undef
VUS3- Undef


Color code:   non disease-causing <   VUS1 <   VUS2 <   VUS3 <   VUS4 <   VUS5 <   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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