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OpenTrials
Completed

NCT Number: NCT04601844

Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Pozelimab in Combination With Cemdisiran in Healthy Adult Volunteers

The primary objective of the study is to evaluate the safety and tolerability of ascending doses of subcutaneous (SC) pozelimab and SC cemdisiran when administered on the same day or sequentially 28 days apart.

The secondary objectives of the study are:

* To assess the concentration-time profiles of total pozelimab, total complement component 5 (C5), cemdisiran, and cemdisiran metabolite(s) following single ascending doses of SC pozelimab and SC cemdisiran when administered on the same day or sequentially 28 days apart * To assess the pharmacodynamic (PD) profile of ascending doses of SC pozelimab and SC cemdisiran, as well as when administered on the same day or sequentially 28 days apart * To assess the immunogenicity of pozelimab and cemdisiran

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Key information

Conditions

Age range

18 year–55 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Regeneron Research Site

Antwerp, B-2060, Belgium

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Key Inclusion Criteria:

  • Has a body mass index less than 30 kg/m2 at the screening visit
  • Judged to be in good health as defined in the protocol
  • Is in good health based on laboratory safety testing obtained at the screening visit NOTE: Subject with a history of Gilbert's disease can be enrolled in the study
  • Willing to undergo vaccination against Neisseria meningitidis unless subjects have documentation of completed series of vaccinations within the past 2 years of the screening visit
  • Must have two negative COVID-19 tests taken 48 hours apart and within 7 days prior to study drug administration

Key Exclusion Criteria:

  • History of clinically significant cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, psychiatric or neurological disease, as assessed by the investigator that may confound the results of the study or poses an additional risk to the subject by study participation
  • Hospitalization (>24 h) for any reason within 30 days of the screening visit
  • Has a confirmed positive drug test result at the screening visit and/or prior to enrollment; or a history of recreational drug use (eg, marijuana) and/or drug or alcohol abuse within a year prior to the screening visit
  • Is positive for HIV, hepatitis B surface antigen (HBsAg), or hepatitis B core antibody (HBcAb), hepatitis C antibody and positive for qualitative (ie, detected) HCV RNA test at the screening visit
  • Within the previous 2 months of the screening visit has a history of bacterial, protozoal, parasitic or viral infection (including COVID-19) and/or persistent chronic or active recurring infection which requires treatment with antibiotics, antivirals, or antifungals
  • Known or suspected COVID-19 disease
  • Known allergy or intolerance to penicillin class antibiotics or macrolides

NOTE: Other protocol-defined Inclusion/ Exclusion criteria apply

Treatment and study plan

Pozelimab

Drug

Single dose administered subcutaneously

Other names: REGN3918

Cemdisiran

Drug

Single dose administered SC

Other names: ALN-CC5

Primary outcomes

  1. Incidence and severity of treatment emergent adverse events (TEAEs)

    Time frame: Up to 20 weeks

Secondary outcomes

  1. Concentrations of pozelimab in serum over time

    Time frame: Up to 20 weeks

  2. Concentrations of cemdisiran in plasma over time

    Time frame: Up to 20 weeks

  3. Concentrations of total C5 over time

    Time frame: Up to 20 weeks

  4. Change from baseline in total complement hemolytic activity assay (CH50) over time

    Time frame: Up to 20 weeks

  5. Incidence of treatment-emergent anti-drug antibodies (ADA) to pozelimab

    Time frame: Up to 20 weeks

  6. Incidence of treatment-emergent anti-drug antibodies (ADA) to cemdisiran

    Time frame: Up to 20 weeks

Sponsors and collaborators

Lead sponsor

Regeneron Pharmaceuticals

Industry

Collaborators

  • Alnylam Pharmaceuticals

Registry information

Official study title

An Open-Label, Ascending Dose Study of the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Single Doses of Subcutaneously Administered Human Monoclonal Antibody Pozelimab in Combination With Single Doses of Subcutaneously Administered siRNA Cemdisiran in Healthy Volunteers

Important dates

Study start
2020
Primary completion
2021
Study completion
2021
First posted
Oct 26, 2020
Registry last updated
Nov 12, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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