Clinical trials
Observational Anemia, Sickle Cell trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
309 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2001 | 2 |
| 2002 | 2 |
| 2004 | 2 |
| 2005 | 7 |
| 2006 | 7 |
| 2007 | 8 |
| 2008 | 12 |
| 2009 | 13 |
| 2010 | 8 |
| 2011 | 7 |
| 2012 | 18 |
| 2013 | 10 |
| 2014 | 15 |
| 2015 | 12 |
| 2016 | 11 |
| 2017 | 15 |
| 2018 | 20 |
| 2019 | 13 |
| 2020 | 19 |
| 2021 | 24 |
| 2022 | 21 |
| 2023 | 15 |
| 2024 | 19 |
| 2025 | 14 |
| 2026 | 7 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 185 |
| Recruiting | 41 |
| Unknown status | 32 |
| Active, not recruiting | 14 |
| Not yet recruiting | 14 |
| Terminated | 11 |
| Enrolling by invitation | 6 |
| Withdrawn | 6 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| National Heart, Lung, and Blood Institute (NHLBI) | 29 |
| St. Jude Children's Research Hospital | 23 |
| Assistance Publique - Hôpitaux de Paris | 14 |
| HaEmek Medical Center, Israel | 11 |
| Children's Hospital Medical Center, Cincinnati | 9 |
| Centre Hospitalier Universitaire de la Guadeloupe | 6 |
| Duke University | 6 |
| Hospices Civils de Lyon | 6 |
| Hospital Universitari Vall d'Hebron Research Institute | 6 |
| Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | 5 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Anemia, Sickle Cell | 309 |
| Thalassemia | 27 |
| beta-Thalassemia | 16 |
| Hemoglobinopathies | 15 |
| Hematologic Diseases | 14 |
| Hypertension, Pulmonary | 12 |
| Sickle Cell Trait | 12 |
| Vaso-Occlusive Crises | 11 |
| Pain | 10 |
| Cystic Fibrosis | 9 |
Trials
Showing 51 to 75 of 309. Each trial links to its page on Pharma Observatory.
209 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
No changes to these trials in the last 7 days.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.