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TerminatedNCT00525135Updated Feb 3, 2015Results posted

Valproic Acid (Depakote ER) in Patients With Advanced Thyroid Cancer

A Phase 2 interventional study of Valproic Acid in Head and Neck Cancer, sponsored by University of California, San Francisco. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-02-03.

Sponsored by University of California, San Francisco · Phase 2, Interventional, and Treatment

Why this study was terminated
PI left university and study was halted prematurely. No data was analyzed.
Phase
Phase 2
Study type
Interventional
Enrollment
5
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

RATIONALE: Drugs such as valproic acid may make thyroid cancers more radioiodine sensitive, which will allow for detection of tumor and make further ablation treatment effective.

Read the detailed description

PURPOSE: This phase II trial is studying how well valproic acid works in treating patients with thyroid cancers that do not respond well to other treatments.

02

Conditions studied

  • Head and Neck Cancer

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03

In context

Thyroid Neoplasms

802 studies on the registry are indexed under Thyroid Neoplasms; 216 are open to participants now.

This study's enrollment of 5 is below the median of 51 across 507 interventional studies indexed under Thyroid Neoplasms.

Browse Thyroid Neoplasms studies →

Lead sponsor

University of California, San Francisco is the lead sponsor of 2,132 studies on the registry; 375 are open to participants now.

Of its 262 completed or terminated interventional studies of FDA-regulated products, 196 (75%) 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

Inclusion criteria

DISEASE CHARACTERISTICS

  • Diagnosis of advanced/poorly differentiated thyroid cancer of follicular cell origin that is radioiodine-unresponsive
  • Cumulative dose of radioiodine \< 800 mCi
  • No radioiodine uptake on whole body scan within 18 months of enrollment
  • Inoperable extensive locoregional tumor mass and/or metastatic spread
  • Failed conventional therapy that included total thyroidectomy AND radioactive iodine I 131 ablation
  • Elevated thyroglobulin level (>2ng/ml on thyroid hormone, >10ng/ml off thyroid hormone)or Tg-antibody positive

PATIENT CHARACTERISTICS

-18 years or older

Entry lab results:

  • Hemoglobin > 8.0 gm/dl
  • Absolute Neutrophil Count > 750 cells/mm3
  • Platelet count > 75000/mm3
  • BUN \< 1.5 times upper limit of normal (ULN)
  • Creatinine \< 1.5 times ULN
  • Total protein > 6.4
  • Total bilirubin should be \< 1.5 times ULN.
  • AST (SGOT), ALT (SGPT), ALKP and amylase \< 1.5 times ULN
  • Amylase \< 1.5 times ULN
  • Albumin > 2.5
  • Ammonia \< 1.5 times ULN

Exclusion criteria

EXCLUSION CRITERIA:

  • Not pregnant
  • No nursing within the past 3 months
  • No allergy to valproic acid
  • No coexisting malignancy other than basal cell carcinoma
  • No hepatic disease or significant dysfunction
  • Karnofsky score > 80
  • No pancreatitis
  • No kidney dysfunction
  • Fertile patients must use effective contraception
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
5 participants (actual)

Study arms

  • Other
    1

    If a patient exhibits increased radioiodine uptake on the Thyrogen scan post valproic acid therapy, patients will then prepare for ablative treatment and will remain on valproic acid for a total of 16 weeks, until receiving RAI ablation.

    Drug: Valproic Acid

  • Other
    2

    If no increased uptake is seen, patients will continue on valproic acid for 6 additional weeks at an increased dosage, totaling an overall treatment time of 16 weeks as well.

    Drug: Valproic Acid

Interventions

  • DrugValproic Acid

    OUTLINE: This is a pilot study. Patients receive valproic acid daily for 16 weeks. Dose increases on Days 4 and 8; dose remains the same for weeks 2-10. All patients will undergo a Thyrogen® (thyrotropin alfa for injection) RAI scan at entry to the study and after completion of 10 weeks of valproic acid treatment. Quality of life is assessed at the end of every week through a study diary. Patients are followed at 1, 2, 4, 6, 8, 10, 12, 14, 16, and 17 (Schedule 1) weeks. Patients return for follow-up at 3, 6, and 12 months.

06

What researchers measure

Primary outcomes

  1. Decrease in Thyroglobulin Level

    Number of participants with decreased thyroglobulin level after study treatment

    Time frame: Baseline, 16 weeks

  2. Decrease in Tumor Size

    Number of participants with decreased tumor size after study treatment

    Time frame: Baseline, 16 weeks

Secondary outcomes

  1. Increased Radioactive Iodine Uptake

    Number of participants with increased radioiodine uptake on the Thyrogen scan post valproic acid therapy

    Time frame: Baseline, 10 weeks

  2. Side Effects of Drugs Affecting Quality of Life

    Number of participants experiencing \> Grade 1 adverse events (including fatigue) attributable to study treatment

    Time frame: 17 weeks

  3. Survival

    Time frame: up to 10 years post-study treatment

07

Results

Posted Feb 3, 2015

Participant flow

Participant flow — Overall Study
MilestoneStudy Intervention
Started5
Completed5
Not completed0

Outcome measures

PrimaryDecrease in Thyroglobulin Level

Number of participants with decreased thyroglobulin level after study treatment

Time frame:
Baseline, 16 weeks
Reported as:
Number · participants
Decrease in Thyroglobulin Level
participantsStudy Intervention
Decrease in Thyroglobulin Level0
SecondaryIncreased Radioactive Iodine Uptake

Number of participants with increased radioiodine uptake on the Thyrogen scan post valproic acid therapy

Time frame:
Baseline, 10 weeks
Reported as:
Number · participants
Increased Radioactive Iodine Uptake
participantsStudy Intervention
Increased Radioactive Iodine Uptake3
SecondarySide Effects of Drugs Affecting Quality of Life

Number of participants experiencing \> Grade 1 adverse events (including fatigue) attributable to study treatment

Time frame:
17 weeks
Reported as:
Number · participants
Side Effects of Drugs Affecting Quality of Life
participantsStudy Intervention
Side Effects of Drugs Affecting Quality of Life0
PrimaryDecrease in Tumor Size

Number of participants with decreased tumor size after study treatment

Time frame:
Baseline, 16 weeks
Reported as:
Number · participants
Decrease in Tumor Size
participantsStudy Intervention
Decrease in Tumor Size0
SecondarySurvival
Time frame:
up to 10 years post-study treatment

No measurements were reported for this outcome.

Adverse events

Collected over 17 weeks. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Study Intervention—0/5 (0%)0/5 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Study Intervention
MeanNA ± NA
Sex: Female, Male
Sex: Female, Male(Participants)Study Intervention
FemaleNA
MaleNA
Region of Enrollment
Region of Enrollment(participants)Study Intervention
United States5
08

Study locations

1 site
  • UCSF Comprehensive Cancer Center
    San Francisco, California 94115, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 3, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00525135
Lead sponsor
University of California, San Francisco
Collaborators
National Cancer Institute (NCI)
Responsible party
Sponsor
First posted
Sep 5, 2007
Start date
Aug 2007
Primary completion
Mar 2009
Completion
Mar 2009
Results posted
Feb 3, 2015
Last update
Feb 3, 2015

Study contacts

Electron Kebebew, MD
principal investigator · University of California, San Francisco

Oversight

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

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This study is terminated, as verified in Jan 2015. You cannot join it, but the record below documents what was studied.

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