Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 22, 2026, 2:34 PM EDT

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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
Conditions
Hypophosphatasia
Interventions
ALXN1850
Biological
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
4
States / cities
Las Vegas, Nevada • Columbus, Ohio • Nashville, Tennessee + 1 more
Conditions
Hypophosphatasia
Interventions
ALXN1850, Placebo
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
2 Years to 11 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
3
States / cities
Baltimore, Maryland • Kansas City, Missouri • Durham, North Carolina
Conditions
Hypophosphatasia
Interventions
ALXN1850, asfotase alfa
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
2 Years to 11 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
6
States / cities
Hartford, Connecticut • Baltimore, Maryland • Minneapolis, Minnesota + 3 more
Conditions
Hypophosphatasia
Interventions
ALXN1850, Placebo
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
12 Years to 130 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
5
States / cities
Indianapolis, Indiana • Garden City, New York • Durham, North Carolina + 2 more