Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT00022997 · ClinicalTrials.gov registry record
Study of Taste Deficits
A clinical trial, sponsored by National Institute on Deafness and Other Communication Disorders (NIDCD).
- Completed
- Registry status
- 450
- Enrollment target
NCT00022997: Completed study, sponsored by National Institute on Deafness and Other Communication Disorders (NIDCD).
NCT00022997 is a clinical trial that has completed, run by National Institute on Deafness and Other Communication Disorders (NIDCD). The registered enrollment target is 450 participants. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00022997 has completed, sponsored by National Institute on Deafness and Other Communication Disorders (NIDCD).
- COMPLETED
- Registry status
- 450 participants
- Enrollment target
Study Summary
This study will explore the genetics of taste and taste deficits. The sense of taste plays a crucial role in food choices, allowing people to identify beneficial foods (those with high caloric value, which are typically sweet) and foods likely to be toxic (usually bitter substances). The loss of sense of taste in older people plays a role in decreased appetite and poor nutrition. Taste deficits may adversely affect people in ways that are not well understood. This study will examine why some people (about one-fourth of all people in the United States) cannot taste a substance called phenylthiocarbamide (PTC). The inability to taste PTC is due to inherited factors that are not yet clear. Individuals age 18 and older who can taste PTC and individuals who cannot taste PTC may be eligible for this study. Participants will taste a number of liquid solutions until they find one with a clear taste. Then they will taste another group of solutions and decide which ones have that taste and which have no taste. Finally, they will taste a third group of solutions until they find one with a different taste. About 2 tablespoons of blood will be drawn from participants for genetic tests related to the sense of taste.
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 450 participants |
| Start Date | 2001-08-16 |
| Est. Completion | 2019-06-04 |
What the finished NCT00022997 record still lists
NCT00022997 is an observational study that tracks outcomes without assigning an intervention. The registered 450 participants enrollment target is mid-sized for trials with a published cap.
The record links to 0 conditions, and to 0 interventions.
NCT00022997 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00022997 about?
NCT00022997 is a clinical study titled "Study of Taste Deficits". This study will explore the genetics of taste and taste deficits. The sense of taste plays a crucial role in food choices, allowing people to identify beneficial foods (those with high caloric value, which are typically sweet) and foods likely to be toxic (usually bitter substances). The loss of sen...
What is the current status of trial NCT00022997?
This trial is currently completed. The enrollment target is 450 participants. The study started on 2001-08-16. Estimated completion is 2019-06-04.
Who is sponsoring clinical trial NCT00022997?
This trial is sponsored by National Institute on Deafness and Other Communication Disorders (NIDCD), which has 34 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
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
- NCT00515060 · 450 participants
Psychophysical Studies of Cancer Therapy Pain
- NCT01257269 · 450 participants
Genotype and Phenotype Correlation in Hereditary Thrombotic Thrombocytopenic Purpura (Upshaw-Schulman Syndrome)
- NCT03047161 · 450 participants
Electrophysiology of Fetal Arrhythmia
- NCT03269630 · 450 participants
New Orleans Pulmonary Hypertension Biobank
Similar registry start date
- 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
- NCT07292298 · started 2026-11 · Phase 2
Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates
- NCT04263285 · started 2026-10 · NA
Treatment of Depression Post-SCI