ClinicalTrials.gg
CompletedNCT00036881Updated Jul 14, 2016

Zinc Sulfate in Preventing Loss of Sense of Taste in Patients Undergoing Radiation Therapy for Head and Neck Cancer

A Phase 3 interventional study of zinc sulfate and placebo in Dysgeusia, Head and Neck Cancer and Oral Complications, sponsored by Alliance for Clinical Trials in Oncology. Completed. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2016-07-14.

Sponsored by Alliance for Clinical Trials in Oncology · Phase 3, Interventional, and Supportive care

Phase
Phase 3
Study type
Interventional
Enrollment
173
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

RATIONALE: It is not yet known whether zinc sulfate is effective in preventing the loss of ability to taste food in cancer patients who are undergoing radiation therapy for head and neck cancer.

PURPOSE: Randomized phase III trial to determine the effectiveness of zinc sulfate in preventing loss of sense of taste in patients who are undergoing radiation therapy for head and neck cancer.

Read the detailed description

OBJECTIVES:

  • Determine whether zinc sulfate prolongs the time to onset of altered taste in patients with head and neck cancer undergoing radiotherapy.
  • Determine whether this drug decreases the overall incidence of altered taste in these patients.
  • Determine whether this drug results in fewer radiotherapy treatment interruptions in these patients.
  • Assess the quality of life of patients treated with this drug.
  • Determine the toxic effects of this drug in these patients.

OUTLINE: This is a randomized, double-blind, placebo-controlled, multicenter study. Patients are stratified according to planned radiotherapy dose (less than 6,000 cGy vs at least 6,000 cGy), estimated amount of oral mucosa in the radiation field (60% or less vs more than 60%), age (under 50 vs 50 and over), concurrent chemotherapy (yes vs no), and smoking (yes vs no). Patients are randomized to 1 of 2 treatment arms.

  • Arm I: Patients receive oral zinc sulfate 3 times daily beginning the first week of radiotherapy.
  • Arm II: Patients receive oral placebo 3 times daily beginning the first week of radiotherapy.

Treatment in both arms continues daily during and for 1 month after radiotherapy in the absence of unacceptable toxicity.

Quality of life is assessed at baseline, weekly during treatment, and then at 1, 2, 3, and 6 months after the completion of treatment.

Patients are followed at 1, 2, 3, and 6 months after the completion of treatment and then every 6 months for 1 year.

02

Conditions studied

  • Dysgeusia
  • Head and Neck Cancer
  • Oral Complications
  • Radiation Toxicity
03

In context

Dysgeusia

52 studies on the registry are indexed under Dysgeusia; 12 are open to participants now.

This study's enrollment of 173 is above the median of 49 across 28 interventional studies indexed under Dysgeusia.

Browse Dysgeusia studies →

Lead sponsor

Alliance for Clinical Trials in Oncology is the lead sponsor of 509 studies on the registry; 28 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 6 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

DISEASE CHARACTERISTICS:

  • Diagnosis of head and neck cancer
  • No stage I laryngeal cancer
  • Planned treatment with at least 2,000 cGy of external beam radiotherapy to at least 30% of the oral cavity

PATIENT CHARACTERISTICS:

Age:

  • 18 and over

Performance status:

  • 0-2

:

  • At least 3 months

Gastrointestinal:

  • Able to tolerate oral medication
  • No known mechanical obstruction of the alimentary tract
  • No malabsorption
  • No intractable vomiting (more than 5 episodes per week)

Other:

  • No known intolerance to zinc sulfate
  • No known, untreated oral thrush
  • Not pregnant or nursing
  • Negative pregnancy test
  • Fertile patients must use effective

PRIOR CONCURRENT THERAPY:

Surgery:

  • No prior surgery that included ablation or removal of the olfactory component of taste

Other:

  • No concurrent zinc supplements

    • Concurrent standard multivitamins allowed
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 3
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
173 participants (actual)

Study arms

  • Experimental
    zinc sulfate

    Patients receive oral zinc sulfate 3 times daily beginning the first week of radiotherapy. Treatment continues daily during and for 1 month after radiotherapy in the absence of unacceptable toxicity. Quality of life is assessed at baseline, weekly during treatment, and then at 1, 2, 3, and 6 months after the completion of treatment. Patients are followed at 1, 2, 3, and 6 months after the completion of treatment and then every 6 months for 1 year.

    Dietary Supplement: zinc sulfate

  • Placebo comparator
    placebo

    Patients receive oral placebo 3 times daily beginning the first week of radiotherapy. Treatment continues daily during and for 1 month after radiotherapy in the absence of unacceptable toxicity. Quality of life is assessed at baseline, weekly during treatment, and then at 1, 2, 3, and 6 months after the completion of treatment. Patients are followed at 1, 2, 3, and 6 months after the completion of treatment and then every 6 months for 1 year.

    Other: placebo

Interventions

06

What researchers measure

Primary outcomes

  1. Prolongation of the time to onset of altered taste by zinc sulfate

    Time frame: Up to 1.5 years

Secondary outcomes

  1. Incidence of taste alteration

    Time frame: Up to 1.5 years

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Halyard MY, Jatoi A, Sloan JA, Bearden JD 3rd, Vora SA, Atherton PJ, Perez EA, Soori G, Zalduendo AC, Zhu A, Stella PJ, Loprinzi CL. Does zinc sulfate prevent therapy-induced taste alterations in head and neck cancer patients? Results of phase III double-blind, placebo-controlled trial from the North Central Cancer Treatment Group (N01C4). Int J Radiat Oncol Biol Phys. 2007 Apr 1;67(5):1318-22. doi: 10.1016/j.ijrobp.2006.10.046. PubMed 17394940 ↗
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of May 2002, a primary completion of Apr 2007 and a completion of Jun 2007. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
May 13, 2002
First posted
Jan 27, 2003
Start
May 2002
Primary completionActual
Apr 2007
CompletionActual
Jun 2007
Last update
Jul 14, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 14, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00036881
Responsible party
Sponsor
First posted
Jan 27, 2003
Start date
May 2002
Primary completion
Apr 2007
Completion
Jun 2007
Last update
Jul 14, 2016

Study contacts

Aminah Jatoi, MD
study chair · Mayo Clinic

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2016. You cannot join it, but the record below documents what was studied.

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