Pilot Study to Assess Safety, Preliminary Efficacy and Pharmacokinetics of S.C. Pegcetacoplan (APL-2) in PNH Subjects.

NCT ID: NCT02588833

Last Updated: 2021-01-11

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 23 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2015-12-01
• Study Completion Date: 2019-08-26

Brief Summary

The objectives of the study are to assess the safety, tolerability, preliminary efficacy and PK of multiple subcutaneous (SC) doses of pegcetacoplan in subjects with paroxysmal nocturnal hemoglobinuria (PNH) who have not received treatment with eculizumab in the past.

An exploratory objective of the study is to assess the pharmacodynamics (PD) of multiple SC doses of pegcetacoplan when administered to PNH patients.

Detailed Description

This is a Phase Ib, open-label, multiple ascending dose, pilot study in patients with PNH who have not received eculizumab (Soliris)® in the past. Two cohorts of 3 subjects are planned for evaluation.

Safety will be assessed throughout the study; serial blood and urine samples will be collected for these assessments. Blood samples will be collected for the assessment of pegcetacoplan PK. Additional samples for assessment of PD will also be collected.

The study will consist of four parts;

• Part 1: subjects will receive pegcetacoplan for 28 days.
• Part 2A: subjects may continue to receive pegcetacoplan for a further 56 days if there is evidence of perceived clinical benefit following review of available safety, PK and PD data by the investigator and sponsor
• Part 2B/Part 2C: subjects may continue to receive daily pegcetacoplan treatment for up to 364 days if there is ongoing evidence of clinical benefit following review of the available safety, PK and PD data. After completion of Part 2B, subjects could continue treatment with pegcetacoplan by transitioning to an open-label extension study or Part 2C, if enrollment into the extension study was not yet available. Subjects entering Part 2C continued their pegcetacoplan dose and regimen until enrollment in the open-label extension study was available.
• Part 3: Safety follow up Screening will take place within 30 days prior to the start of dosing on Day 1. If needed (see inclusion criteria), Neisseria menigitides types A, C, W, Y and B (administered as two separate vaccinations), Pneumococcal conjugate vaccine or Pneumococcal polysaccharide vaccine 23 (PCV13 or PPSV23, respectively), and Haemophilus influenzae Type B (Hib) vaccinations will be administered at least 14 days prior to dosing on Day 1.

Subjects will be entered into Part 1 of the study on Day 1 at a time designated by the PI. During Part 1, the first 3 daily SC doses of pegcetacoplan (Day 1 to 3) as well as doses on Day 8, 15 and 22 will be administered at the clinical site. From Day 4 to Day 28 daily doses of pegcetacoplan will be administered off-site by a trained study nurse at the subject's home, workplace, or other location convenient to the subject with the exception of those days where dosing is at the clinical site. Following ongoing review of available safety, PK and PD data by the investigator and sponsor, subjects showing evidence of perceived clinical benefit may progress to Part 2A and then to Part 2B of the study and continue to receive daily doses of pegcetacoplan until Day 84 and then until Day 364.

Cohort 2 will not be initiated until all subjects in Cohort 1 have reached the Day 29 visit and the SMC has reviewed emerging safety and efficacy data and determined that, at the initial dose, pegcetacoplan has an acceptable safety and tolerability profile.

The planned length of participation in the study for each subject in Cohort 2 is approximately 444 days (14.5 months) from Day 30 through completion of the Day 414 Exit visit procedures).

The study is planned to take place over approximately 24 months (from screening of Cohort 1 through completion of Cohort 2).

This time period may change in the event that the study is terminated early, additional cohorts are enrolled, additional time is required to review safety between cohorts, or extended safety and PK sampling is added for a cohort.

Conditions

Paroxysmal Nocturnal Hemoglobinuria

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Cohort 1

180 mg pegcetacoplan/day

Group Type: EXPERIMENTAL

Pegcetacoplan

Intervention Type: DRUG

Complement (C3) Inhibitor

Cohort 2

270 mg pegcetacoplan/day

Group Type: EXPERIMENTAL

Pegcetacoplan

Intervention Type: DRUG

Complement (C3) Inhibitor

Interventions

Pegcetacoplan

Complement (C3) Inhibitor

Intervention Type: DRUG

Other Intervention Names

APL-2

Eligibility Criteria

Inclusion Criteria

• Male or female
• At least 18 years old (inclusive)
• Weigh >55 kg and have a body mass index (BMI) ≤38.0 kg/m2
• Diagnosed with PNH (white blood cell (WBC) clone >10%)
• Lactose dehydrogenase (LD) ≥2 times the upper limit of normal
• Last transfusion within 12 months prior to screening
• Platelet count of >30,000/mm3
• Absolute neutrophil count >cells/500 µL
• Women of child-bearing potential (WOCBP) must have a negative pregnancy test at screening and must agree to use protocol defined methods of contraception for the duration of the study
• Males must agree to use protocol defined methods of contraception and agree to refrain from donating sperm for the duration of the study
• Able to provide documentary evidence of Neisseria meningitidis, Pneumococcal conjugate vaccine (multivalent) or Pneumococcal polysaccharide vaccine 23 (PCV13 or PPSV23) and Haemophilus influenzae Type B (Hib) vaccination within 2 years prior to Day 1 dosing, OR willing to receive vaccinations against Neisseria meningitidis at least two weeks prior to dosing on Day 1 with a booster on Day 57, and PCV13 and Hib vaccines at least two weeks prior to dosing on Day 1.
• Willing and able to give informed consent

Exclusion Criteria

• Prior eculizumab (Soliris)® treatment
• Active bacterial infection
• Known infection with hepatitis B, hepatitis C or human immunodeficiency virus (HIV)
• Hereditary complement deficiency
• History of bone marrow transplantation
• Concurrent severe aplastic anemia (SAA), defined as currently receiving immunosuppressive therapy for SAA including but not limited to cyclosporin A, tacrolimus, mycophenolate mofetil or anti-thymocyte globulin.
• Participation in any other investigational drug trial or exposure to another investigational agent, device or procedure within 30 days
• Evidence of QTcF prolongation defined as >450 ms for males and >470 ms for females at screening
• Creatinine clearance (CrCl) <50 mL/min (Cockcroft-Gault formula) at screening
• Breast-feeding women
• History of meningococcal disease

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Apellis Pharmaceuticals, Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Federico Grossi, MD, PhD

Role: STUDY_DIRECTOR

Apellis Pharmaceuticals, Inc.

Locations

Prince of Wales Hospital

Hong Kong, , Hong Kong

Queen Mary Hospital

Hong Kong, , Hong Kong

Hospital Ampang

Ampang, Selangor, Malaysia

Waikato Hospital

Hamilton, Waikato Region, New Zealand

Ramathibodi Hospital

Bangkok, , Thailand

Siriraj hospital

Bangkok, , Thailand

Phramongkutklao Hospital

Bangkok, , Thailand

Countries

Hong Kong; Malaysia; New Zealand; Thailand

References

Panse J, Daguindau N, Okuyama S, Peffault de Latour R, Schafhausen P, Straetmans N, Al-Adhami M, Persson E, Wong RSM. Improvements in hematologic markers and decreases in fatigue with pegcetacoplan for patients with paroxysmal nocturnal hemoglobinuria and mild or moderate anemia (hemoglobin >/=10 g/dL) who had received eculizumab or were naive to complement inhibitors. PLoS One. 2024 Jul 29;19(7):e0306407. doi: 10.1371/journal.pone.0306407. eCollection 2024.

Reference Type: DERIVED

PMID: 39079163 (View on PubMed)

Wong RSM, Pullon HWH, Amine I, Bogdanovic A, Deschatelets P, Francois CG, Ignatova K, Issaragrisil S, Niparuck P, Numbenjapon T, Roman E, Sathar J, Xu R, Al-Adhami M, Tan L, Tse E, Grossi FV. Inhibition of C3 with pegcetacoplan results in normalization of hemolysis markers in paroxysmal nocturnal hemoglobinuria. Ann Hematol. 2022 Sep;101(9):1971-1986. doi: 10.1007/s00277-022-04903-x. Epub 2022 Jul 22.

Reference Type: DERIVED

PMID: 35869170 (View on PubMed)

Provided Documents

Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Other Identifiers

APL2-CP-PNH-204

Identifier Type: -

Identifier Source: org_study_id