E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Patients with Cold Agglutinin Disease (CAD) |
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E.1.1.1 | Medical condition in easily understood language |
Patients with Cold Agglutinin Disease (CAD) |
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E.1.1.2 | Therapeutic area | Diseases [C] - Immune System Diseases [C20] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To demonstrate the efficacy of twice-weekly subcutaneous (s.c.) 1080-mg infusions of pegcetacoplan compared with that of placebo in patients with CAD |
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E.2.2 | Secondary objectives of the trial |
• To demonstrate the effect of pegcetacoplan on the number of packed red blood cell (PRBC) transfusions in patients with CAD. • To demonstrate the effect of pegcetacoplan on health-related quality of life in patients with CAD. • To assess the effect of pegcetacoplan on clinical laboratory markers of hemolysis and transfusion dependence in patients with CAD. • To determine the durability of response in patients with CAD receiving pegcetacoplan. • To assess tolerability, safety and immunogenicity of pegcetacoplan in patients with CAD. • To describe long-term effect of pegcetacoplan in patients with CAD.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Age18 years or older. 2. Diagnosis of primary CAD on the basis of the presence of all the following criteria at screening: a Signs of hemolysis with abnormal values by at least 2 of the following hemolytic markers: i Reduced haptoglobin level (< LLN). ii Elevated LDH level (> ULN). iii Elevated indirect bilirubin level (> ULN; > 3 x ULN for patients with Gilbert-Meulengracht Syndrome). iv Increased ARC (above the ULN). b Monospecific direct antiglobulin test strongly positive for C3d. c Cold agglutinin titer ≥ 64 at 4 °C. 3. Hb level ≤ 9 g/dL at screening. 4. An absolute neutrophil count ≥ 1500 cells/mm3 at screening. 5. Documented results from bone marrow biopsy within 1 year of screening with lymphoproliferative infiltration ≤ 20 %. Patients who have not received a bone marrow biopsy within 1 year of their screening visit or those patients for whom bone marrow biopsy reports are incomplete or unavailable will be required to receive a bone marrow biopsy to determine eligibility. 6. Body weight ≤ 100 kg. 7. Either have vaccination against Streptococcus pneumoniae, Neisseria meningitidis (Types A, C, W, Y, and B), and Haemophilus influenzae (Type B) within 2 years prior to screening or agree to receive vaccination during screening as follows: First dose of vaccine against N. meningitidis Types A, C, W, and Y at least 2 weeks prior to start of study drug with second dose 2 months late (Study Day 57), and then boosters every 5 years. First dose of the vaccine against N. meningitidis Type B at least 2 weeks prior to start of study drug with a second dose after at least 1 month (Study Day 29). First booster dose 1 year later, and then additional booster doses every 2 to 3 years. S. pneumoniae: pneumococcal conjugate vaccine 23 (PCV13) and/or pneumococcal polysaccharide vaccine 23 (PPSV23) as per Advisory Committee on Immunization Practices (ACIP) guidelines for adults or children with immunocompromising conditions. H. influenzae Type B: 1 dose at least 2 weeks prior to start of study drug. Vaccination is mandatory, unless documented evidence exists that patients are non responders to vaccination. Vaccinations should be administered following the ACIP recommendations for adults or children with complement deficiencies and/or immunocompromising conditions. 8. Women of childbearing potential (WOCBP), defined as any women who have experienced menarche and who are NOT permanently sterile or postmenopausal, must have a negative pregnancy test at screening and agree to use protocol-defined methods of contraception for the duration of the study and 8 weeks after their last IMP dose. Note: Postmenopausal is defined as having had 12 consecutive months with no menses without an alternative medical cause. 9.Men must agree to the following for the duration of the study and 8 weeks after their last IMP dose: a Avoid fathering a child. b Use protocol-defined methods of contraception. c Refrain from donating sperm. 10. Willing and able to give written informed consent. |
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E.4 | Principal exclusion criteria |
1. Have received other anticomplement therapies (approved or investigational) within 5 half-lives of the agent prior to randomization (e.g., eculizumab within 10 weeks, ravulizumab within 36 weeks or sutimlimab within 15 weeks) and are not able or willing to refrain from using them during the study. Patients previously treated with > 1 dose of sutimlimab will be excluded if they have not experienced a documented increase in Hb ≥ 1.0 g/dL during sutimlimab treatment. 2. Treatment with belimumab, rituximab or other anti-CD20 antibody (such as obinutuzumab or ocrelizumab, with bendamustine, fludarabine, other cytotoxic drugs or Bruton tyrosine kinase inhibitors such as ibrutinib acalabrutinib and zanubrutinib, alone or in combination with rituximab) within 16 weeks prior to randomization. 3. Use of prohibited medications as described in the protocol. The list of acceptable medications and required stable regimen periods are outlined in the study protocol. 4. Diagnosis of systemic lupus erythematosus or other autoimmune diseases with antinuclear antibodies (antinuclear antibodies of long standing duration without associated clinical symptoms will be adjudicated on a case-by-case basis by the investigator after discussion with the medical monitor). 5. History of an aggressive lymphoma or presence of a lymphoma requiring therapy. 6. Have received an organ transplant. 7. Cold agglutinin syndrome secondary to Mycoplasma pneumoniae, Epstein-Barr virus or other specific causative infection In patients with long history of CAD, positive IgM titer and IgG titer without associated clinical symptoms will be adjudicated on a case-by-case basis by the investigator after discussion with the medical monitor. 8. HIV or hepatitis C virus detectable by polymerase chain reaction at screening or documented in the patient’s medical record. 9. Chronic hepatitis B virus carriers with viral loads > 1000 IU/mL (> 5000 copies/mL) at screening or documented in the patient’s medical record. Eligible patients who are chronic inactive carriers (≤ 1000 IU/mL) must receive prophylactic antiviral treatment (e.g., entecavir, tenofovir, lamivudine) according to local country guidelines. 10. Presence of an active malignant disease within the last 12 months other than skin basal cell carcinoma or in situ carcinoma of the cervix. A low-grade lymphoproliferative bone marrow disorder not requiring therapy by itself is not defined as a malignant disease in this context. 11. A monospecific direct antiglobulin test result of IgG > 1+. 12. Presence or suspicion of liver dysfunction as indicated by elevated alanine aminotransferase (ALT) > 2.5 x ULN, or direct bilirubin levels > 2 x ULN For any patient with increased direct bilirubin, the investigator should exercise medical judgement to ensure that the increased direct bilirubin value is due to hemolysis and discuss inclusion with the medical monitor. If the direct bilirubin is higher than the indirect bilirubin, in addition a thorough search for exclusion of underlying liver or cholestatic disease, including but not necessarily limited to abdominal ultrasound, is warranted to exclude liver and/or cholestatic disorders. 13. Hypersensitivity to pegcetacoplan or to any of the excipients or placebo compounds. 14. Known or suspected hereditary fructose intolerance. 15. Unresolved infection caused by encapsulated bacteria including N. meningitidis, S. pneumoniae and H. influenzae. 16. Presence or suspicion of severe recurrent or chronic infections that, in the opinion of the investigator, increase the patient’s risk by participating in the study. 17. Participation in any other investigational drug trial or exposure to other investigational agent, device or procedure within 30 days prior to screening period. 18. If breastfeeding, is unwilling to discontinue for the duration of study and for at least 8 weeks after the final IMP dose. 19. Inability to cooperate with study procedures. 20. Any disease(s), psychiatric condition, metabolic dysfunction, or findings from a physical examination or clinical laboratory test result that would cause reasonable suspicion of a disease or condition that may jeopardize the patient’s wellbeing, that may increase the risk associated with study participation, that may affect the interpretation of the results, or that would make the patient unsuitable for this study. 21.Protected adults (guardianship, trusteeship) who are unable to express their consent and persons under court protection. 22. Any infection (including COVID-19) requiring hospitalization or treatment with intravenous anti-infectives not resolved within 2 weeks prior to the first dose of the IMP. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Response to treatment at Week 24. Response is defined as: • An increase in hemoglobin (Hb) of ≥ 1.5 g/dL from Baseline or Hb normalization at Week 16; AND • Maintenance of this effect from Week 16 to Week 24; AND • The absence of PRBC transfusions (between Week 5 and Week 24). Note: Hb normalization is defined as within normal range (between the defined upper and lower limits of normal [ULN and LLN]), as set by the testing laboratory. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
Part A: • Number of PRBC transfusions from Week 5 to Week 24. • Change from Baseline to Week 24 in the following: • Lactate dehydrogenase (LDH) level. • Haptoglobin level. • Indirect bilirubin level. • Absolute reticulocyte counts (ARC). • D-dimer level. • Normalization of markers of hemolysis at Week 24, specifically: • LDH level. • Indirect bilirubin level. • ARC. • Time to first normalization from Baseline to Week 24 for the following: • Hb level. • LDH level. • Indirect bilirubin level. • ARC. • Number of PRBC units transfused from Week 5 to Week 24. • Change from Baseline to Week 24 in the following: •Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) subscale score of the FACT-An scale. • 12-Item Short Form Survey (SF-12) score. • 5-Level EuroQol 5-Dimension (EQ-5D-5L) score. Part B: • Change from Baseline to Week 48 in the following: • Hb level. • LDH level. • Haptoglobin level. • Indirect bilirubin level. • ARC. • D-dimer level. • Normalization of markers of hemolysis at Week 48, specifically: • LDH level. • Indirect bilirubin level. • ARC. • Durability of response for patients randomized to pegcetacoplan who achieve the primary endpoint at Week 24. • Change from Baseline to Week 48 in the following: • FACT-An score. • FACIT-F subscale score of the FACT-An scale. • SF-12 score. • EQ-5D-5L score. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
From Week 5 to Week 24. From Baseline to Week 48 |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 7 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 50 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Canada |
Japan |
United States |
Georgia |
Austria |
Belgium |
Bulgaria |
Finland |
France |
Germany |
Hungary |
Italy |
Netherlands |
Norway |
Spain |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end of study is when all randomized patients have terminated the 8 week safety follow-up period and performed the EOS visit or the Early termination visit in case of discontinuation for any reason from the study before completion. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 5 |
E.8.9.1 | In the Member State concerned days | 13 |
E.8.9.2 | In all countries concerned by the trial years | 4 |
E.8.9.2 | In all countries concerned by the trial months | 6 |
E.8.9.2 | In all countries concerned by the trial days | 10 |