Phase 2 Cystic Fibrosis Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
Cohorts 1–3 (without CFTR modulator therapy)
- People with a diagnosis of cystic fibrosis (CF) who carry a specific genetic mutation called 3849+10 Kb C->T on at least one copy of the CFTR gene, confirmed by a certified genetic testing laboratory.
- People with a body mass index (BMI) of 17 or above.
- People whose lung function test (called FEV1) falls between 40% and 90% of what is considered normal for their age and size, measured at the screening visit.
- People who have not smoked or vaped for at least 6 months before the screening visit, based on their own report.
Cohort 4 (with CFTR modulator therapy)
- People with a diagnosis of CF who carry the specific 3849+10 Kb C->T genetic mutation on at least one copy of the CFTR gene, confirmed by a certified genetic testing laboratory.
- People with a BMI of 17 or above.
- People whose FEV1 lung function result falls between 40% and 80% of predicted at screening.
- People who have not smoked or vaped for at least 6 months before the screening visit, based on their own report.
- People who have been consistently taking Trikafta/Kaftrio or Alyftrek for at least 3 months, or Alyftrek for at least 1 month after switching from Trikafta/Kaftrio, as directed by prescribing information.
Who may not be able to join:
Cohorts 1–3
- People who have taken CF medicines called Kalydeco, Orkambi, Symdeko/Symkevi, or Trikafta/Kaftrio within 30 days before the first study dose.
- People who have taken another experimental drug or used an experimental medical device (other than SPL84) within 30 days before the first study dose.
- People who have used steroid tablets or injections for more than 3 months in a row during the past 6 months, or used them at all in the month before screening; or people using inhaled steroids at a dose above 1 mg.
- People whose CF-related medicines (such as inhaled antibiotics, Pulmozyme, hypertonic saline, or physiotherapy routines) have not been on a stable and unchanged routine for at least 28 days before screening; people taking inhaled antibiotics as a preventive measure must have been on a stable dose for at least 90 days before the first study dose.
- People who have had any active infection — including chest or airway infections, a CF flare-up, or any other illness requiring new treatment — within 14 days before the first study dose.
- People who have coughed up more than 30 mL of blood in the 90 days before the study starts, or who have been hospitalised for coughing up blood within 6 months before the first study dose.
- People with significant liver disease, including serious scarring of the liver (cirrhosis) or high blood pressure in the liver's blood vessels (portal hypertension).
- People who have previously had an organ transplant.
- People who have had a confirmed COVID-19 infection within 4 weeks before dosing begins.
Cohort 4 (additional exclusion)
- People who previously participated in the active treatment group of the related SPL84-002 study (Cohorts 1–3).
- All other exclusion criteria listed above for Cohorts 1–3 also apply to Cohort 4.
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
GP referral letter
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Trial details
Where this trial is recruiting
Primary endpoints
Safety and Tolerability of SPL84 as evaluated by number of subjects with at least one treatment-related adverse event (AE) or serious adverse event (SAEs); Safety and Tolerability of SPL84 as assessed by number of participants with abnormal heart rate; Safety and Tolerability of SPL84 as assessed by number of participants with abnormal respiratory rate; Safety and Tolerability of SPL84 as assessed by number of participants with abnormal systolic and diastolic blood pressure; Safety and Tolerability of SPL84 as assessed by number of participants with abnormal oximetry; Safety and Tolerability o...
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Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.