Please select the eligibility criteria that correspond to the clinical trial below.
Title: Multi-center Phase 2 Study to Assess the Safety, Tolerability and Early Signs of Efficacy of Tid Orally Administered BAY63-2521 in Adult Delta F508 Homozygous Cystic Fibrosis Patients
Brief Summary: Assessment of the safety, tolerability and early signs of efficacy of three times a day orally administered BAY63-2521 in adult delta F508 homozygous Cystic Fibrosis patients not on treatment with Orkambi


Options:
A: Inclusion Criteria:

* Subjects who weigh ≥15 kg without shoes a the Screening Visit
* Subjects with confirmed diagnosis of CF at the Screening Visit.
* Subjects who are homozygous for the F508del CFTR mutation
* Subjects with ppFEV1 of ≥70 percentage points adjusted for age, sex, and height
* Subjects with a screening LCI2.5 result greater than or equal to 7.5

Exclusion Criteria:

* History of any comorbidity reviewed at the Screening Visit that, in the opinion of the investigator, might confound the results of the study or pose an additional risk in administering study drug to the subject.
* Any clinically significant laboratory abnormalities at the Screening Visit that would interfere with the study assessments or pose an undue risk for the subject
* Clinically significant abnormalities in hemoglobin, liver function, or renal function at the Screening Visit.
* An acute upper or lower respiratory infection, pulmonary exacerbation, or changes in therapy for pulmonary disease within 28 days before Day 1
* History of solid organ or hematological transplantation at the Screening Visit
B: Key Inclusion Criteria:

* Completed study drug treatment in parent study (VX19-445-116, NCT04353817), or had study drug interruption(s) in parent study but completed study visits up to the last scheduled visit of the treatment period in the parent study

Key Exclusion Criteria:

* History of study drug intolerance in the parent study

Other protocol defined Inclusion/Exclusion criteria may apply
C: Inclusion Criteria:

* Signed informed consent available before any study specific tests or procedures are performed
* Patients must be at least 18 years of age at time of inclusion (i.e. upon signature of informed consent)
* Patient diagnosed with Cystic Fibrosis according to standard criteria (i.e. either elevated sweat chloride content above 60 mmol/ L and/ or genetic testing)
* Patient is homozygous for the deltaF508 mutation
* Patient has a mild-to-moderate stage of lung disease as determined by FEV1 (FEV1 between 40 and 100% predicted)
* Patient has a stable condition of lung disease (no ongoing or recent pulmonary exacerbation and no change in current treatment) within the last 4 weeks prior to screening
* Ability and willingness to understand and follow study procedures for the entire study
* Patients do not smoke. Patients with a history of smoking can be included, if they have refrained from smoking for the last 3 months. If a patients starts smoking during the study participation, he/ she needs to be excluded and considered to be a drop out
* Body mass index (BMI): ≥ 16 kg/ m² (calculated by dividing the patient's weight by the square of his/ her height \[kg/ m2\])

Inclusion criterion valid for study part 1 only:

- Women of childbearing potential must agree to use adequate contraception when sexually active. 'Adequate contraception' is defined as one highly effective form of contraception (intrauterine devices \[IUD\], contraceptive implants or tubal sterilization) or a combination of methods (hormone method with a barrier method ). If a partner's vasectomy is the chosen method of contraception or if a partner has documented azoospermia, a hormone or barrier method must be used in combination. Adequate contraception is required from the signing of the informed consent form up until 4 weeks after the last study drug administration

Inclusion criteria valid for study part 2 only:

* Women of childbearing potential must agree to use adequate contraception when sexually active. 'Adequate contraception' is defined as one highly effective form of contraception (intrauterine devices \[IUD\], contraceptive implants or tubal sterilization) or a combination of methods (hormone method with a barrier method). For patients on Orkambi hormonal methods (including hormonal oral contraceptives) cannot be accepted in this study. They need to choose non-hormonal methods. If a partner's vasectomy is the chosen method of contraception or if a partner has documented azoospermia, a hormone or barrier method must be used in combination. Adequate contraception is required from the signing of the informed consent form up until 4 weeks after the last study drug administration
* Patients receiving Orkambi (Lumcaftor + Ivacaftor) as part of their standard care need to be on stable Orkambi treatment for at least 3 months prior to screening (patients on Lumacaftor and/or Ivacaftor are excluded in part 1)

Exclusion Criteria:

* Patients with Cystic Fibrosis with any background other than homozygous deltaF508 mutation
* Exclusion criterion only valid for study part 1: Patients receiving treatment with Lumacaftor and/ or Ivacaftor
* Active state of hemoptysis or pulmonary hemorrhage, including those events managed by bronchial artery embolization. Also any history of moderate hemoptysis within the 3 months prior to inclusion
* Any history of pneumothorax, bronchial artery embolization or massive hemoptysis. Massive hemoptysis being defined as acute bleeding \>240 mL in a 24-hour period or recurrent bleeding \>100 mL/ d over several days
* A positive sputum culture for Burkholderia cenocepacia, Burkholderia dolosa, and/ or Mycobacterium abscessus either currently or within the previous year
* Active allergic broncho-pulmonary aspergillosis
* Current pulmonary exacerbation
* Known history of solid organ transplantation
* Known history of any form of pulmonary hypertension
* Clinically relevant deviations of the screened laboratory parameters from reference ranges outside of expected changes for Cystic Fibrosis patients, especially a hemoglobin value below 110 g/L or a creatinine clearance based on the Cockcroft-Gault formula \< 15 ml/ min
D: Inclusion Criteria:

* Male or female subjects with a confirmed diagnosis of CF defined as a sweat chloride value ≥60 mmol/L by quantitative pilocarpine iontophoresis or two CF-causing mutations,documented in the subject's medical record or confirmed at screening.
* Age 18 and above on the date of informed consent.
* Weight ≥40 kg.
* Homozygous for the F508del-CFTR mutation. Genotyping to be confirmed at screening.
* Ability to perform a valid, reproducible spirometry test with demonstration of a forced expiratory volume in 1 sec (FEV1) \>40% of predicted normal for age, sex and height.
* Screening laboratory tests with no clinically significant abnormalities that would interfere with the study assessments (as judged by the Investigator).
* Subjects who are sexually active must agree to follow the study's contraception requirements.

Exclusion Criteria:

* An acute upper or lower respiratory tract infection, pulmonary exacerbation, or changes in therapy for pulmonary disease within 4 weeks prior to Day 1.
* Major complications of lung disease (including massive hemoptysis, pneumothorax, or pleural effusion) within 8 weeks prior to screening.
* Impaired renal function or known portal hypertension.
* History of prolonged QT and/or QTcF (Fridericia's correction) interval (\>450 msec) or QTcF \>450 msec at Screening.
* History of solid organ or hematological transplantation.
* History of alcohol abuse or drug addiction (including cannabis, cocaine and opiates) during the past year, (as judged by the Investigator).
* Use of ivacaftor or lumacaftor, within 4 weeks of Day 1
* Any change (initiation, change in type of drug, dose modification, schedule modification, interruption, discontinuation, or re-initiation) in a chronic treatment/prophylaxis regimen for CF or for CF-related conditions within 4 weeks prior to Day 1.
* Ongoing immunosuppressive therapy (including systemic corticosteroids).
* Hemoglobin \<10 g/dL.
* Abnormal liver function, at screening.
* Abnormal renal function at screening.
* Ongoing participation in another clinical study or prior participation without appropriate washout (minimum of 10 half- lives or 30 days, whichever is longer) prior to Screening visit.

Answer: C