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                                                                Synonyms: VX-121 | VX121
                                 
                                                         
                            
                            
                            
                                 
                                
                                vanzacaftor is an approved drug 
                                                        
                                                    
                                Compound class: 
                                                            Synthetic organic
                                 
                                
                                    
                                        Comment: Vanzacaftor (VX-121) is a cystic fibrosis transmembrane regulator (CFTR) protein corrector for class II CFTR mutations (the most common being F508del). Its biological activity is similar to that of elexacaftor. Like elexacftor, off-target effects on K+ channels have been reported [2].
                                    
                                 
                            
                            
                          
                                
                                    
                                
                          
                                   
                                   
                                  
                                    
                                    
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| No information available. | 
Summary of Clinical Use ![]()  | 
                                                        
| Approved as a component of the triplex therapy Alyftrek® (vanzacaftor + tezacaftor + deutivacaftor), to treat cystic fibrosis. | 
| Clinical Trials | |||||
| Clinical Trial ID | Title | Type | Source | Comment | References | 
| NCT05076149 | A Study of VX-121 Combination Therapy in Participants With Cystic Fibrosis (CF) Who Are Homozygous for F508del, Heterozygous for F508del and a Gating (F/G) or Residual Function (F/RF) Mutation, or Have At Least 1 Other Triple Combination Responsive (TCR) CFTR Mutation and No F508del Mutation | Phase 3 Interventional | Vertex Pharmaceuticals Incorporated | 1 | |
| NCT05033080 | A Phase 3 Study of VX-121 Combination Therapy in Participants With Cystic Fibrosis (CF) Heterozygous for F508del and a Minimal Function Mutation (F/MF) | Phase 3 Interventional | Vertex Pharmaceuticals Incorporated | 1 | |