To assess how long extended release prototype capsule formulations stay in the stomach as determined by magnetic resonance imaging (MRI). To evaluate the safety of several extended release capsule formulations (LYN-PLT) and a placebo capsule.
This is a multicentre, observer blind, randomised, single dose study in healthy adult subjects. The first 5 subjects enrolled into the study will be regarded as Dosing Group 1 (sentinel group) and assigned to each of the five available study formulations. Dosing of subjects in Dosing Groups 1 and 2 will be performed at the endoscopy centre. Dosing of subjects in Dosing Groups 3 through 5 will be performed at the clinical site. Subjects remain in the inpatient unit for 7 days after dosing. During this time, subjects undergo intermittent imaging assessments for gastric retention (MRI and abdominal U/S), safety assessments and faecal collections for assessments of retrieved components and bowel movement characteristics. Subjects return to the clinic on Days 10, 15, 22 and 29 (End of Study visit). Safety assessments will be performed at all visits. MRI, abdominal U/S and outpatient faecal collections may continue based on the clinical findings from subjects dosed with modified release capsule formulations. On Day 29, the subjects will undergo final safety assessments at the clinic and thereafter, will be discharged from the study.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
QUADRUPLE
Enrollment
40
Formulation A (37/40A) of LYN-PLT containing less than 300 mg sucrose within the extended release formulation
Formulation B (46/40A) of LYN-PLT containing less than 300 mg sucrose within the extended release formulation
Formulation C (37/50A) of LYN-PLT containing less than 300 mg sucrose within the extended release formulation
CMAX
Adelaide, South Australia, Australia
Gastric retention assessed by Magnetic Resonance Imaging (MRI)
Visualization of formulation/formulation components in the stomach by MRI
Time frame: Up to 9 Days post-dosing
Safety and tolerability of four LYN-PLT modified release capsules and a placebo capsule collected from Adverse Event (AE) reporting based on spontaneous reports
The number of confirmed gastrointestinal adverse events will be reported based on spontaneous adverse event reporting
Time frame: Through study completion, up to 6 months
Safety and tolerability of four LYN-PLT modified release capsules and a placebo capsule collected from Adverse Event (AE) reporting based on changes in examinations pre (Day 1) and post dosing (Days 4 and 7)
Clinically significant aggregate changes in vital signs, physical examinations and safety laboratory assessments (haematology, liver function tests, clinical chemistry panel) between pre-dose (Day 1) and post-dosing (Day 4 and 7) will be reported as AE's
Time frame: Through study completion, up to 6 months
Safety and tolerability of four LYN-PLT modified release capsules and a placebo capsule collected from Adverse Event (AE) reporting based on post dosing evaluation of bowel movements for blood
Examination and reporting of post-dosing bowel movements for blood; clinically significant abnormal findings will be reported as AE's.
Time frame: Through study completion, up to 6 months
Safety and tolerability of four LYN-PLT modified release capsules and a placebo capsule collected from Adverse Event (AE) reporting
If abdominal pain occurs, a systematic algorithm to evaluate abdominal pain \[modified Structured Assessment of GastroIntestinal Symptoms (SAGIS)\] will be used. Clinically significantly abnormal findings will be reported as adverse events
Time frame: Through study completion, up to 6 months
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Formulation D (46/50A) of LYN-PLT containing less than 300 mg sucrose within the extended release formulation
Placebo Capsule containing microcrystalline cellulose
Endoscopy at 2 hours post dosing
MRI will be performed on specified days according to protocol
Gastric retention assessed by abdominal ultrasound (U/S)
Visualization of formulation/formulation components in the stomach by U/S
Time frame: Up to 9 Days post-dosing
Confirm esophageal clearance of several MR capsules and a placebo capsule
For Group 1 and Group 2 via endoscopy
Time frame: 2 hours post dosing
Physical Feature of Recovered Formulation Components
Record the physical features, e.g. number of polymeric arms (if separate) or if attached to the core, of formulation components recovered from collected fecal specimens
Time frame: Through study completion up to Day 29