A Study to Evaluate the Efficacy and Safety of Dupilumab in Participants With Allergic Bronchopulmonary Aspergillosis (ABPA) (LIBERTY ABPA AIRED)

Key Inclusion Criteria:

* Diagnosis of both ABPA and asthma
* On a maintenance therapy for their asthma with controller medication which must include inhaled corticosteroids (ICS) and may include 1 or more additional controller medications including a long-acting beta agonist (LABA), leukotriene receptor antagonist (LTRA), and/or long-acting muscarinic receptor antagonist (LAMA), etc for at least 12 weeks, with a stable dose and regimen with no change in the dose or frequency of administration for at least 4 weeks prior to the screening visit and between the screening and baseline/randomization visits
* For participants on OCS (oral corticosteroid): must be on a chronic stable dose (no change in the dose) of OCS of up to 10 mg/day (for participants taking daily corticosteroids) or up to 30 mg every alternate day (for participants taking alternate day corticosteroids) (prednisone/prednisolone or the equivalent) for at least 4 weeks prior to the screening visit and between the screening and the baseline/randomization visit
* Must have experienced ≥1 severe respiratory exacerbation requiring treatment with systemic corticosteroids or hospitalization or treatment in ED/urgent care within 12 months prior to the screening visit or must be receiving chronic stable low-dose OCS per above criteria

Key Exclusion Criteria:

* Weight less than 30.0 kilograms
* Current smoker or e-cigarette user, cessation of smoking or e-cigarette use within 6 months prior to randomization, or \>=10 pack-years smoking history
* Post-bronchodilator FEV1 \<30% predicted normal at screening
* Respiratory exacerbation requiring systemic corticosteroids within 4 weeks prior to screening and between screening and baseline visit (for patients on daily or alternate day OCS, exacerbation requiring at least double the maintenance dose of corticosteroids)
* Upper or lower respiratory tract infection within the 4 weeks prior to screening (visit 1) or between the screening and randomization visits
* Significant chronic pulmonary disease other than asthma complicated with ABPA (eg, physician-diagnosed bronchiectasis due to a condition other than ABPA; cystic fibrosis; sarcoidosis; interstitial lung disease not due to ABPA; chronic obstructive pulmonary disease \[COPD\] not due to ABPA; hypereosinophilic syndrome; etc), a diagnosed pulmonary or systemic disease associated with elevated peripheral eosinophil counts
* Diagnosis or suspected diagnosis of eosinophilic granulomatosis with polyangiitis (EGPA) (also called Churg-Strauss Syndrome)

NOTE: Other protocol defined inclusion / exclusion criteria applies.