Updates for c.1545_1546del:
2023-02-02 name changed from c.1545_1546delTA to c.1545_1546del




Variant NM_000492.4:c.1545_1546del


Variant details:
Name NM_000492.4:c.1545_1546del
Protein name NP_000483.3:p.(Tyr515*)
Genomic name (hg19)     chr7:g.117199670_117199671del    UCSC    
Genomic name (hg38) chr7:g.117559616_117559617del    UCSC
#Exon/intron exon 11
Legacy Name 1677delTA
Class disease-causing
Subclass CF-causing
WT sequence TCTTTGGTGTTTCCTATGATGAATA TA GATACAGAAGCGTCATCAAAGCATG
Mutant sequence TCTTTGGTGTTTCCTATGATGAATA -- GATACAGAAGCGTCATCAAAGCATG

Other databases:
dbSNP
rs121908776







Pathogenicity predictors:

Not found




Response to modulators:


Reference PMID Modulator in vitro / ex vivo data clinical data Patient responsiveness
Burgel et al., 2024 39151434 ELX-TEZ-IVAN.D. yesno



No patient found in CFTR-NGS catalogue


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

TOTAL NUMBER OF PATIENTS 14
Asymptomatic compound heterozygote 1
CF 10
CFTR-RD3
  • CBAVD  2
  • Pancreatitis  1




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

Detailed genotypes:
Phenotype Patient ID Variant status Additional variants
CF 133heterozygoteCF-causing - Trans
CF 2622heterozygoteCF-causing- Undef
CF 2096heterozygoteCF-causing - Trans
CF 6275heterozygoteCF-causing- Undef
CF 5366heterozygoteCF-causing- Undef
CF 1557heterozygoteCF-causing - Trans
CF 1236heterozygoteCF-causing - Trans
CF 1138heterozygoteCF-causing - Trans
CF 6523heterozygoteCF-causing- Undef
CF 4062homozygotec.1545_1546del - p.(Tyr515*) - Trans
Asymptomatic compound heterozygote 540heterozygotevarying clinical consequence - Trans
CBAVD 1356heterozygoteCFTR-RD-causing- Undef
CBAVD 546heterozygotevarying clinical consequence - Trans
Pancreatitis 5461heterozygote


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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