NCT02516670

Brief Summary

This randomized phase II trial studies how well docetaxel works when given with or without ascorbic acid in treating patients with prostate cancer that has spread to other places in the body. Drugs used in chemotherapy, such as docetaxel, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Ascorbic acid (vitamin C) is a water-soluble vitamin that may help inhibit the growth of cancer cells. It is not yet known whether docetaxel works better when given with or without ascorbic acid in treating prostate cancer.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
50

participants targeted

Target at P25-P50 for phase_2

Timeline
Completed

Started Jun 2016

Longer than P75 for phase_2

Geographic Reach
1 country

6 active sites

Status
terminated

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 4, 2015

Completed
2 days until next milestone

First Posted

Study publicly available on registry

August 6, 2015

Completed
11 months until next milestone

Study Start

First participant enrolled

June 20, 2016

Completed
5.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 31, 2021

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 14, 2021

Completed
10 months until next milestone

Results Posted

Study results publicly available

August 8, 2022

Completed
Last Updated

June 7, 2023

Status Verified

June 1, 2023

Enrollment Period

5.1 years

First QC Date

August 4, 2015

Results QC Date

July 11, 2022

Last Update Submit

June 5, 2023

Conditions

Outcome Measures

Primary Outcomes (2)

  • Number of Participates With a Decline in Prostate-specific Antigen From Their Baseline Measurement

    prostate-specific antigen decline will be defined as ≥ 50% from baseline measurement

    up to 24 weeks

  • Number of Participants With Adverse Events

    Number of participants experiencing fatigue, nausea, bone pain, and anorexia as defined by CTCAE 4.0

    Up to 30 days after the last dose of study drug

Secondary Outcomes (5)

  • Average Number of Times Docetaxel Had Dose Reductions

    Up to 24 weeks

  • Number of Serious Adverse Events

    Up to 30 days after last dose of study drug

  • Number of Participates Experiencing Serious Adverse Events (SAE)

    Up to 24 weeks

  • Change in Quality of Life (QoL) as Measured by the FACT-P Questionnaire

    Up to course 6 of therapy (18 weeks)

  • Radiographic Progression Free Survival (rPFS)

    Up to 3 years

Other Outcomes (3)

  • Effect of Ascorbic Acid on Docetaxel Exposure

    Up to 24 weeks

  • F2-isoprostanes, a Pharmacodynamic Measure of Oxidant Injury in Vivo

    Up to course 6 (18 weeks)

  • Peak and Trough Ascorbic Acid Levels

    Up to 24 weeks

Study Arms (2)

Arm A (docetaxel, ascorbic acid)

EXPERIMENTAL

Patients receive docetaxel IV on day 1 and ascorbic acid IV twice weekly. The first ascorbic acid treatment will be given on day 1 (same day as docetaxel). Treatment repeats every 21 days for 8 courses in the absence of disease progression or unacceptable toxicity.

Dietary Supplement: Ascorbic AcidDrug: DocetaxelOther: Laboratory Biomarker AnalysisOther: Pharmacological StudyOther: Quality-of-Life Assessment

Arm B (docetaxel, placebo)

PLACEBO COMPARATOR

Patients receive docetaxel IV on day 1 and placebo IV twice weekly.The first placebo treatment will be given on day 1 (same day as docetaxel). Treatment repeats every 21 days for 8 courses in the absence of disease progression or unacceptable toxicity.

Drug: DocetaxelOther: Laboratory Biomarker AnalysisOther: Pharmacological StudyOther: PlaceboOther: Quality-of-Life Assessment

Interventions

Ascorbic AcidDIETARY_SUPPLEMENT

Given IV

Also known as: 2-(1,2-dihydroxyethyl)-4,5-dihydroxy-furan-3-one, Asorbicap, C Vitamin, C-Long, Ce-Vi-Sol, Cecon, Cenolate, Cetane, Cevalin, L-Ascorbic Acid, VIT C, Vitamin C, Vitamin-C
Arm A (docetaxel, ascorbic acid)

Given IV

Also known as: RP56976, Taxotere, Taxotere Injection Concentrate
Arm A (docetaxel, ascorbic acid)Arm B (docetaxel, placebo)

Correlative studies

Arm A (docetaxel, ascorbic acid)Arm B (docetaxel, placebo)

Correlative studies

Arm A (docetaxel, ascorbic acid)Arm B (docetaxel, placebo)
PlaceboOTHER

Given IV

Also known as: placebo therapy, PLCB, sham therapy
Arm B (docetaxel, placebo)

Ancillary studies

Also known as: Quality of Life Assessment
Arm A (docetaxel, ascorbic acid)Arm B (docetaxel, placebo)

Eligibility Criteria

Age18 Years+
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Have metastatic castration-resistant prostate cancer (prostate cancer progressing despite castrate levels of testosterone \[\< 50 ng/dL\] using standard measures of progression defined by Prostate Cancer Working Group 2), are chemo-naïve for metastatic castration-resistant prostate cancer (mCRPC); patients must have symptomatic disease or visceral metastases or otherwise be eligible for docetaxel treatment per investigator judgment (e.g. for progression on imaging or rapidly rising PSA despite 2nd line hormonal treatment);
  • Note: Six cycles of prior docetaxel are allowed in hormone-sensitive disease, per Eastern Cooperative Oncology Group (ECOG) 3805 data and have been off of docetaxel for at least 12 months
  • Have a pathological diagnosis of prostate carcinoma
  • Patients may be receiving continuous hormonal ablation with surgical or medical castration with baseline testosterone \< 50 ng/dL
  • Patient may be receiving bone targeted agents
  • Have evaluable disease by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 and/or Prostate Cancer Working Group 2 (PCWG2) criteria
  • Have ECOG performance status 0-1
  • Have an estimated life expectancy \> 4 months
  • Absolute neutrophil count \>= 1500/mm\^3
  • Platelets \>= 100,000/mm\^3
  • Hemoglobin \>= 9 g/dL
  • Total bilirubin =\< 1.0 upper limit of normal (ULN)
  • Aspartate aminotransferase (AST)(serum glutamic oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT)(serum glutamate pyruvate transaminase \[SGPT\]) =\< 2.5 x ULN
  • Creatinine =\< 1.6 mg/dl (for patients with \> 1.6 mg/dl, calculated or measured creatinine clearance must be \>= 55 mL/minute \[Cockcroft-Gault\])
  • Men of reproductive potential and those who are surgically sterilized (i.e., postvasectomy) must agree to practice effective barrier contraception that has an expected failure rate of \< 1% during and for 30 days after discontinuation of study treatment
  • +2 more criteria

You may not qualify if:

  • Have had known active central nervous system (CNS) metastases and/or carcinomatous meningitis; subjects with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least four weeks prior to the first dose of trial treatment and any neurologic symptoms have returned to baseline), have no evidence of new or enlarging brain metastases, and are not using steroids for CNS involvement for at least one week prior to trial treatment; patients with primary brain tumors are not eligible; however, as patients are completing abiraterone therapy, they will be allowed to continue up to 10 mg/day of prednisone
  • Have had prior chemotherapy for metastatic disease in castration-resistant prostate cancer (prior chemotherapy for hormone-sensitive disease, more than twelve months prior to registration, is acceptable)
  • Have had had surgery within four weeks of dosing of investigational agent, excluding minor procedures (dental work, skin biopsy, etc.), celiac plexus block, and biliary stent placement
  • Have had palliative radiation or biological cancer therapy within 2 weeks prior to the first dose of study drug
  • Have received other investigational drugs within 28 days prior to enrollment
  • Is expected to require any other form of systemic or localized antineoplastic therapy while on study
  • Patients who require frequent (several times a day) monitoring of their blood glucose or patients who have recently been hospitalized for glucose control
  • Are being treated with anticoagulation therapy (aspirin and nonsteroidal anti-inflammatory drugs \[NSAIDS\] are allowed)
  • The subject requires concomitant treatment with the following inhibitors of cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4):
  • Antibiotics: clarithromycin, erythromycin, telithromycin, troleandomycin
  • Antifungals: itraconzaole, ketoconazole, voriconazole, fluconazole, posaconazole
  • Antidepressants: nefazodone
  • Antidiuretic: conivaptan
  • Anti-retrovirals: delaviridine or protease inhibitors (ritonavir, indinavir, lopinavir/ritonavir, saquinavir, nelfinavir) or cobicistat-boosted antiretrovirals
  • Gastrointestinal (GI): cimetidine, aprepitant
  • +9 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (6)

Sibley Memorial Hospital

Washington D.C., District of Columbia, 20016, United States

Location

Anne Arundel Health System, Research Institute

Annapolis, Maryland, 21401, United States

Location

Johns Hopkins University/Sidney Kimmel Cancer Center

Baltimore, Maryland, 21287, United States

Location

Barbara Ann Karmanos Cancer Institute

Detroit, Michigan, 48201, United States

Location

University Hospitals of Cleveland Seidman Cancer Center

Cleveland, Ohio, 44106, United States

Location

Thomas Jefferson University

Philadelphia, Pennsylvania, 19107, United States

Location

Related Publications (1)

  • Paller CJ, Zahurak ML, Mandl A, Metri NA, Lalji A, Heath E, Kelly WK, Hoimes C, Barata P, Taksey J, Garrison DA, Patra K, Milne GL, Anders NM, Nauroth JM, Durham JN, Marshall CH, Markowski MC, Eisenberger MA, Antonarakis ES, Carducci MA, Denmeade SR, Levine M. High-Dose Intravenous Vitamin C Combined with Docetaxel in Men with Metastatic Castration-Resistant Prostate Cancer: A Randomized Placebo-Controlled Phase II Trial. Cancer Res Commun. 2024 Aug 1;4(8):2174-2182. doi: 10.1158/2767-9764.CRC-24-0225.

MeSH Terms

Conditions

Prostatic Neoplasms

Interventions

Ascorbic AcidDocetaxel

Condition Hierarchy (Ancestors)

Genital Neoplasms, MaleUrogenital NeoplasmsNeoplasms by SiteNeoplasmsGenital Diseases, MaleGenital DiseasesUrogenital DiseasesProstatic DiseasesMale Urogenital Diseases

Intervention Hierarchy (Ancestors)

Sugar AcidsAcids, AcyclicCarboxylic AcidsOrganic ChemicalsHydroxy AcidsCarbohydratesTaxoidsCyclodecanesCycloparaffinsHydrocarbons, AlicyclicHydrocarbons, CyclicHydrocarbonsDiterpenesTerpenes

Results Point of Contact

Title
Channing Paller Associate Professor Urologic Oncology
Organization
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins

Study Officials

  • Channing Paller, MD

    Johns Hopkins University/Sidney Kimmel Cancer Center

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 4, 2015

First Posted

August 6, 2015

Study Start

June 20, 2016

Primary Completion

July 31, 2021

Study Completion

October 14, 2021

Last Updated

June 7, 2023

Results First Posted

August 8, 2022

Record last verified: 2023-06

Locations