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Risk-Taking clinical trials

The registry lists 136 studies for Risk-Taking across more than 10 countries. 18 are recruiting or about to start. 55 of them are mainly about Risk-Taking (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-02. Counting its narrower condition Gambling too: 292 studies, 60 open.

Get an email when these change. Save the Risk-Taking studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

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Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

One email a week for all your saved searches. Stop any time.

Status

Completed
101
Recruiting
15
Status unknown
9
Active, not recruiting
4
Not yet recruiting
3
Withdrawn
2

Phase

Phase 1
9
Phase 2
8
Phase 3
5
Phase 4
2
Early Phase 1
1

Where

United States
84
France
6
Canada
4
Germany
3
Switzerland
3
Turkey
3

Who runs them

Centers for Disease Control and Prevention (6) · University of Washington (4) · University of North Carolina, Chapel Hill (4) · National Institute of Allergy and Infectious Diseases (NIAID) (4) · Kaiser Permanente (3) · Ohio State University Comprehensive Cancer Center (3) · University of Connecticut (3) · Johns Hopkins University (3)

What is being tested here

Drugs under test in Risk-Taking studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Caffeine101
Doxycycline011
Aspirin001
Emtricitabine001
Tenofovir001
Cannabis sativa subsp. indica TOP001

Coming up

0phase 3 studies under way
9studies finish main data collection within a year

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

All 9

Who these studies take

Of the 15 Risk-Taking studies recruiting now, 4 (27%) set no upper age limit and 11 (73%) stop at 75 or younger. 8 (53%) take children under 18. 3 (20%) are for women only and 0 (0%) for men only; 9 (60%) take healthy volunteers.

Recruiting studies that take each age, of 15
AgeWomenMen
102 (13%)1 (7%)
1812 (80%)9 (60%)
309 (60%)7 (47%)
408 (53%)6 (40%)
508 (53%)6 (40%)
658 (53%)6 (40%)
754 (27%)2 (13%)
854 (27%)2 (13%)

Across all 136 studies, recruiting or not: 65% stop at 75 or younger and 61% at 65; 40% take children; 10% are for women only and 17% for men only; 66% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Risk-Taking studies take

Of 68 interventional studies with no phase under Risk-Taking, half reached primary completion within 28 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase28 mo7–49 · 68 studies—28 mo9–48 · 65 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

Studies

Recruiting first, then most recently updated. Showing 50 of 136. Browse all 136 → or search them.