Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT01256840 · ClinicalTrials.gov registry record
Long-term Caloric Restriction and Cellular Aging Markers
A clinical trial of Aging, sponsored by University of California, San Francisco.
- Completed
- Registry status
- 71
- Enrollment target
- 1
- Study location
NCT01256840: Completed study of Aging, sponsored by University of California, San Francisco.
NCT01256840 is a study of Aging that has completed, run by University of California, San Francisco. The registered enrollment target is 71 participants, below the 2,194-participant average among 262 other Aging trials with a reported enrollment target (97% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01256840, a study of Aging, has completed, sponsored by University of California, San Francisco.
- COMPLETED
- Registry status
- 71 participants
- Enrollment target
- 1
- Study location
Study Summary
The purpose of this study is to see whether people who have restricted the number of calories they eat for a long period of time, compared to normal-eating and obese people, have markers of cellular aging that look younger.
Primary Outcome
This study is not a clinical trial, but the UCSF Committee on Human Research requires registration with clinicaltrials.gov. It is a ONE TIME POINT study, where we get a simple blood draw from people from three groups - calorie restricting, normal eating, and obese. Therefore, there IS NO FOLLOW UP/time frame. The outcome measure is assessed on the day of the study. Telomere length is a marker of cellular aging and is used to understand how the cells are aging. We will investigate whether long-te
Conditions Studied
Study Locations (1)
California
- University of California - San Francisco
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 71 participants |
| Start Date | 2010-12 |
| Est. Completion | 2014-08 |
What the finished NCT01256840 record still lists
NCT01256840 is an observational study that tracks outcomes without assigning an intervention. The registry caps enrollment at 71 participants, a relatively small participant target, below the 2,194-participant average among 262 other Aging trials with a reported enrollment target (97% lower).
The record links to 1 condition, with Aging appearing as the primary indexed condition, and to 0 interventions.
NCT01256840 reports a single indexed study location in California.
Frequently Asked Questions
What is clinical trial NCT01256840 about?
NCT01256840 is a clinical study titled "Long-term Caloric Restriction and Cellular Aging Markers". The purpose of this study is to see whether people who have restricted the number of calories they eat for a long period of time, compared to normal-eating and obese people, have markers of cellular aging that look younger.
What is the current status of trial NCT01256840?
This trial is currently completed. The enrollment target is 71 participants. The study started on 2010-12. Estimated completion is 2014-08.
What conditions does trial NCT01256840 study?
This clinical trial studies the following conditions: Aging.
Who is sponsoring clinical trial NCT01256840?
This trial is sponsored by University of California, San Francisco, which has 1,713 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT01256840 being conducted?
This trial has 1 study location across California. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
Similar trials for Aging
Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.
Where NCT01256840's enrollment target sits among peer trials
71 124th of 262 higher than 139 of 262 other Aging trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Aging trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
-
Ketone Ester And Salt (KEAS) in Older Adults
RECRUITING · NA
-
The Role of Neutrophils in the Age-driven Decline in Anti-pneumococcal Vaccine Responses
RECRUITING · Phase 4
-
Effect of a Daily Supplement on Plasma PAI-1 Levels
RECRUITING · Phase 1
-
Using Nicotine to Reverse Age-related Auditory Processing Deficits
RECRUITING · NA
-
Heterogeneity of Vascular Adaptations to Exercise With Aging in Women and Men
RECRUITING · NA
-
Modulating Neurocognitive Processes of Learning to Trust and Distrust in Aging
RECRUITING · NA
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT05452889 · 71 participants · Early Phase 1
PET Image in PAH Patients
- NCT05766943 · 71 participants · NA
Reduction of Myopotential Interference With Smart Pass in S-ICD Patients
- NCT06229678 · 71 participants · Early Phase 1
Ketones, SGLT2, HFrEF
- NCT06377566 · 71 participants · Phase 2
A Study of BV-AVD in People With Bulky Hodgkin Lymphoma
Similar registry start date
- NCT05988463 · started 2027-01-01 · Phase 1
Dose-Escalation Study of Artesunate Patients With IPF
- NCT07219706 · started 2026-12-10 · NA
Dietary Fiber and Time Restricted Eating
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia
- NCT07125183 · started 2026-12 · Phase 2
Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma