Platinum-Resistant, Recurrent Epithelial Ovarian Cancer

Ovarian Cancer Clinical Trial

— TopoTxt  

Official title:

A Phase II Study of Weekly Docetaxel and Topotecan in Patients With Platinum-Resistant, Recurrent Epithelial Ovarian Cancer

Clinical Trial Details — Status: Withdrawn

Administrative data

• NCT number: NCT00484666
• Other study ID #: Topo Txt
• Status: Withdrawn
• Start date: May 2006
• Est. completion date: May 2009

Study information

• Verified date: September 2019
• Source: Carilion Clinic
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Primary objective:

To estimate the overall clinical response rate (CR, PR, SD) of weekly docetaxel and weekly topotecan in women with recurrent platinum resistant ovarian or primary peritoneal cancer.

Secondary objectives:

To access the safety and tolerability of this novel combination chemotherapy regimen of weekly docetaxel and weekly topotecan in women with recurrent platinum resistant ovarian or primary peritoneal cancer

To estimate the progression free survival (PFS) and overall survival (OS) for women with recurrent platinum resistant ovarian or primary peritoneal cancer treated with this weekly docetaxel and weekly topotecan.

Description:

Each year more than 28,000 women are diagnosed with epithelial ovarian cancer (EOC). Over 70% of these women will present with advanced (stage III, IV) disease. The current treatment for newly diagnosed advanced EOC involves cytoreductive surgery followed by chemotherapy. The standard chemotherapy in the primary setting is a combination of a taxane; either paclitaxel or docetaxel and a platinum agent; either cisplatin or carboplatin. Although high initial responses are seen with these primary therapies, most will recur. Salvage chemotherapy thus becomes the mainstay of treatment for many patients with this disease. The goals of salvage therapy are to maximize tumor response while maintaining quality of life with minimal toxicity. As a consequence, there are a number of agents that have been studied in this recurrent setting with significant antitumor activity. Two such novel agents, topotecan and docetaxel are the basis of this phase I, II study.

Patients can be grouped into prognostic categories based on their responses to primary therapy. Those with persistent disease or recurrence within 6 months of treatment are deemed platinum resistant and those achieving a greater than 6 month progression free interval are deemed platinum sensitive. This distinction is important because those that are platinum sensitive have an improved overall survival and higher response rates to salvage chemotherapy. The magnitude of this response increases with an increasing progression free interval. The response of these patients to reintroducing either platinum or paclitaxel has been established. Thigpen et. al. showed a 44% overall response rate(ORR) to paclitaxel infused over 24 hours in 16 patients with a platinum free interval of greater than or equal to 6 months. Kavanagh et. al. demonstrated a 21% partial response rate (PR) to the reintroduction of carboplatin after taxane treatment in 26 patients with a 12-month platinum-free intraval following platinum-refractory ovarian cancer.

Topotecan has been shown to have similar activity as paclitaxel as a second line therapy with non-cross resistance. Topotecan is usually administered in a daily infusion over 30 minutes in doses of 1.5 mg/m2/d x 5 consecutive days every 21 days. In an effort to decrease toxicity and maintain response rates, weekly schedules of topotecan have been explored. Homesley et. al. conducted a phase I trial with single agent weekly topotecan evaluating dosages from 1.5 to 6 mg/m2/wk. The recommended phase II dosage for weekly topotecan was determined to be 4 mg/m2/wk. Dose limiting toxicities consisted of 70 non-hematologic events in 32 of 35 evaluable patients, primarily consisting of grade 1 or 2 chronic fatigue (16%) and gastrointestinal (nausea and vomiting [23%]) with the majority (80%) being grade 1 in severity. Dose limiting myelotoxicity and thrombocytopenia were not an issue at the weekly dosages evaluated in this trial. Morris and colleagues at Wayne State University are currently studying weekly topotecan in platinum sensitive patients and have reported a 40% partial response rate with 35% having stable disease. Myelotoxicity was infrequent and included grade 3 or 4 neutropenia in 1.1% and grade 3 anemia in 1.8%. Nonhematologic toxicity included grade 3 fatigue in 17% of patients.

Abu-Rustum et. al. conducted a phase I trial of weekly paclitaxel (60 -100 mg/m2 over 1-hour) in platinum resistant patients (n = 18 patients, recommended phase II dose 80 mg/mg/wk). Dose limiting toxicity was defined as two or more patients with treatment delay or grade 3 toxicity at the same dose level. Treatment was delayed in 2 of 3 patients at the 100 mg/m2 dose level due to ANC < 1500. In addition they reviewed Memorial Sloan Kettering's previous data with weekly paclitaxel (60 to 100 mg/m2/wk) in platinum resistant patients and found an overall response rate (either documented tumor shrinkage or decrease in serum CA-125 levels) of 28% (ORR in 13 of 45 patients). In a follow up phase II trial, Markman et. al. reported a 25% objective response rate in 13 of 51 platinum resistant patients (4 by decreasing CA-125 and 9 by 50% reduction in tumor volume). Only 1% (13 of 887 dosages) required a dose modification due to toxicity with weekly paclitaxel at 80 mg/m2/wk. Weekly paclitaxel is an active second-line regimen and is generally well tolerated.

In advanced, platinum-refractory ovarian cancer, docetaxel administered every 3 weeks has demonstrated substantial single-agent efficacy with response rates ranging from 24% to 40% and an overall survival of 8 to 10.4 months. Neutropenia was the predominant Grade 3 /4 toxicity, followed by fluid retention, hypersensitivity reactions and diarrhea.

The combination of docetaxel and carboplatin has been studied as first-line therapy for the treatment of epithelial ovarian cancer. A phase II study by Markman et.al. utilized docetaxel 60 mg/m2 plus carboplatin AUC 6 every 3 weeks demonstrated an overall response rate of 81%. The most common hematologic toxicity was Grade 4 neutropenia (64%), while neutropenic fever was observed in only 6% of those patients. The most common non-hematologic toxicity was a mild hypersensitivity reaction (34%) that did not prevent patients from completing their planned therapy.

Preliminary results have recently been reported from a randomized phase III trial comparing docetaxel (75 mg/m2/1 hr infusion) to paclitaxel (175 mg/m2/3 hr infusion) in combination with carboplatin (AUC 5 as calculated by 51Cr-EDTA secretion) every 3 weeks as first-line chemotherapy following surgery for Stage Ic-IV ovarian cancer. Both combinations demonstrated very high overall response rates of 65% and 62%, respectively, and an estimated 1 year disease free survival is approximately 60% for both treatment groups. With regard to toxicity, the occurrence of Grade 2-4 sensory neurotoxicity was significantly increased in patients receiving paclitaxel (30%) compared to docetaxel (11%; p<.001) and accounted for the majority of toxicity related treatment withdrawal in the paclitaxel group. The most common severe side effect was myelosuppression with Grade 3 or 4 neutropenia occurring in 84% of patients treated with paclitaxel and 94% of patients treated with docetaxel (p<.001). Febrile neutropenia was noted in 10% of patients treated with docetaxel, compared to 2% of patients treated with paclitaxel (p<.001). However, there was no difference in septic mortality between the two treatment arms.

In order to decrease the incidence of hematological toxicity associated with docetaxel administered every three weeks, clinicians have explored the use of docetaxel on a weekly schedule. There have been numerous published reports examining the role of weekly docetaxel (single agent and in combination chemotherapy regimens) in wide range of solid tumors including breast, NSCLC, prostate and ovarian. Weekly administration of docetaxel resulted in substantial clinical activity, was well tolerated and resulted in a decreased incidence of hematologic toxicity (grade 3/4 neutropenia and leukopenia each reported in ≤16% of patients; grade 3/4 anemia and thrombocytopenia in ≤13% and ≤3% of patients, respectively. Acute toxicities were uncommon, as was peripheral neuropathy. Prolonged treatment with weekly docetaxel results in chronic toxicities, including asthenia (fatigue), edema, tearing (excessive lacrimation or epiphora), and nail changes. Chronic toxicities have been most prominent when docetaxel has been administered on a continuous weekly basis, i.e., without a break. Toxicities appeared to be delayed in onset or avoided by providing treatment breaks. The current strategy is treating weekly 2 out of 3 weeks on an every 21-day cycle or weekly 3 out of 4 weeks on an every 28-day cycle. The reduced incidence of myelosuppression may enhance the feasibility and tolerability of weekly docetaxel-containing combination regimens.

Burris and colleagues have enrolled 36 patients in a phase I study of weekly docetaxel (20, 25, 30 mg/m2/wk) and weekly topotecan (2.0, 3.0, 3.5 to 4 mg/m2/wk) for solid tumors. The combination of weekly docetaxel 30 mg/m2/wk plus topotecan 3 mg/m2/wk on days 1, 8 and 15 every 28 days resulted in no dose-limiting toxicities and no dose reductions or treatment omissions were warranted during cycle 1 of therapy. Non-hematologic toxicities consisted of grade 1 and 2 nausea, vomiting, fatigue and weakness. Dose-limiting toxicity was documented for weekly docetaxel 30 mg/m2/wk plus topotecan 4 mg/m2/wk with two patients experiencing day 15 dose omissions (one patients with platelets 53 K and ANC 500 and one patient with platelets 27 K who was previously treated with oxaliplatin. Eleven patients have been treated to date with weekly docetaxel 30 mg/m2/wk plus topotecan 3.5 mg/m2/wk. Two patients were non-evaluable, one due to rapidly progressive disease and one due to noncompliance. Of the nine evaluable patients, five patients experienced dose-limiting toxicities as follows, (1) cycle 1 day 15 (C1D15) held due to platelets 33K in a heavily pretreated patient, including previous oxaliplatin, (2) C1D15 dose decreased due to grade 3 diarrhea, (3) C1D8 held due to grade 3-4 nausea and vomiting (may have been disease related), (4) C1D15 held due to platelets 49 K (74 yo, heavily pretreated including previous XRT), (5) C1D15 held due to platelets 43K and declining creatinine clearance of 43 ml/min (3 prior regimens, including XRT, PS 2 and history of thrombocytopenia). One additional patient is planned to complete this dose level, to provide 10 evaluable patients. Of the 36 patients receiving 76 cycles of therapy, myelosuppression was brief and reversible with no febrile neutropenia. Per verbal communication from Dr. Burris, the recommended phase II dose will be docetaxel 30 mg/m2/wk plus topotecan 3.5 mg/m2/wk on days 1, 8 and 15 every 28 days for minimally pretreated patients.

Given the results of these data and the goal to increase response rates in platinum resistant recurrent EOC patients it would seem prudent to evaluate the safety and efficacy of weekly docetaxel 30 mg/m2/wk plus weekly topotecan 3.5 mg/m2/wk via a phase II trial. Results of this trial will be important by expanding our current knowledge base utilizing weekly scheduling of chemotherapeutic agents in regard to toxicities and response rates in platinum resistant EOC.

Recruitment information / eligibility

• Status: Withdrawn
• Enrollment: 0
• Est. completion date: May 2009
• Est. primary completion date: May 2009
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• All patients will have had histologically documented ovarian epithelial, fallopian tube or peritoneal cancer.

• Patients must have received one prior platinum- and paclitaxel based regimen

• Patients must be platinum-resistant defined as recurrence or progression of disease <6 months since previous treatment with a platinum based treatment regimen.

• Patients must not have received radiotherapy.

• Patients with the following histologic epithelial cell types are eligible:

• Serous Adenocarcinoma

• Endometrioid Adenocarcinoma

• Mucinous Adenocarcinoma

• Undifferentiated carcinoma

• Clear cell Adenocarcinoma

• Mixed epithelial carcinoma

• Transitional cell

• Malignant Brenner's tumor

• Adenocarcinoma NOS

• Patients may have measurable or evaluable disease whereas evaluable disease is defined as new onset pleural effusion, ascites or a rise in CA-125 level >2x institutions upper limit of normal x 2 now sooner than one week apart.

• Patients could not have more than two previous chemotherapeutic regimens for their advanced ovarian cancer.

• Patients must be at least 18 years of age

• Patients must have a serum creatinine < 1.5 mg/dl

• Patients must have adequate hematologic reserve (ANC > 1500/mm3, hemoglobin = 9.0 gm/dL and platelets > 100,000/mm3)

• Patients must have adequate hepatocellular function:

• Total Bilirubin < institutional upper limits of normal (ULN), AST or ALT and Alkaline Phosphatase must be within the range allowing for eligibility

• Patients must have GOG performance status of 0, 1 or 2.

• Patients must a have signed, approved informed consent form on file.

Exclusion Criteria:

• Patients with borderline ovarian cancer.

• Patients with GOG performance status 3 or 4.

• Patients who have received prior topotecan and/or docetaxel.

• Patients who have a history of psychiatric illness or other concurrent severe and/or uncontrolled co-morbid medical condition that would preclude study completion (i.e., uncontrolled infection, hypertension, ischemic heart disease, myocardial infarction within 6 months, congestive heart failure).

• Patients with other invasive malignancies, with the exception of non-melanoma skin cancer or any evidence of the other cancer(s) present within the last 5 years or whose previous cancer treatment contraindicates this protocol therapy.

• Patients with a history of severe acute hypersensitivity reaction to medications formulated with polysorbate 80.

• Patients with baseline peripheral neuropathy = Grade 2.

• No use of investigational drugs or alternative medicine anticancer therapy within the last 4 weeks of 1st dose of study drug.

• Pregnant or lactating women with reproductive potential. (All patients enrolled in this study will be postmenopausal or have undergone surgery that includes hysterectomy and oophorectomy that would render them unable to conceive children.)

Related Conditions & MeSH terms

• Carcinoma, Ovarian Epithelial
• Ovarian Cancer
• Ovarian Neoplasms

Locations

Country	Name	City	State
United States	Carilion GYN Oncology Associates	Roanoke	Virginia

Sponsors (2)

Lead Sponsor	Collaborator
Carilion Clinic	GlaxoSmithKline

Country where clinical trial is conducted

United States, 

References & Publications (33)

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* Note: There are 33 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To estimate the overall clinical response rate (CR, PR, SD) of weekly docetaxel and weekly topotecan in women with recurrent platinum resistant ovarian or primary peritoneal cancer.		12 Months
Secondary	To access the safety and tolerability of this novel combination chemotherapy regimen of weekly docetaxel and weekly topotecan in women with recurrent platinum resistant ovarian or primary peritoneal cancer		12 Months