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OpenTrials
Completed

NCT Number: NCT00062751

Study Evaluating Temsirolimus (CCI-779) In Breast Neoplasms

To evaluate the preliminary activity and pharmacokinetics of 2 separate doses and schedules of orally administered Temsirolimus (CCI-779) given in combination with daily letrozole, compared to letrozole alone, in the treatment of locally advanced or metastatic breast cancer in postmenopausal women. All patients must be appropriate to receive endocrine therapy as treatment for advanced disease.

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Key information

Conditions

Breast Neoplasms Breast Diseases Neoplasms Neoplasms by Site Skin Diseases Skin and Connective Tissue Diseases

Age range

18 year and older

Sex eligibility

Female

Study type

Interventional

Phase

Phase 2

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Postmenopausal women with histologically confirmed, measurable locally advanced disease or metastatic breast.
  • Must be appropriate to receive endocrine therapy as treatment for advanced disease (chemotherapy; prior adjuvant therapy with antiestrogens other than aromatase inhibitors; prior adjuvant or first-line metastatic therapy with tamoxifen or trastuzumab, are permitted).
  • Women may either present with de novo advanced or metastatic cancer, or have had tumor progression while receiving adjuvant tamoxifen or at any time after completing adjuvant tamoxifen, or have had tumor progression while receiving first-line metastatic therapy with tamoxifen.

Exclusion criteria

  • Patients having known central nervous system (CNS) metastases.
  • Prior therapy with Temsirolimus (CCI-779) or aromatase inhibitors.
  • Tamoxifen, or other hormonal therapy, in the metastatic or adjuvant setting within 1 week prior to day 1 of treatment on study.

Treatment and study plan

Letrozole / Temsirolimus (CCI-779)

Drug

Letrozole 2.5 mg daily + Temsirolimus (CCI-779) 10 mg daily

letrozole

Drug

Letrozole 2.5 mg daily

Other names: Letrozole alone

Primary outcomes

  1. Percentage of Participants With Objective Response (OR)

    Time frame: Baseline, every 4 cycles (1 cycle is defined as a 14 day duration) up to Cycle 25, then every 6 cycles until disease progression

    OR measured as Complete response (CR) or Partial response (PR) confirmed by assessments performed no less than 4 weeks after the criteria for the response are first met. CR=disappearance of all target and non-target lesions with normalization of tumor marker level; PR=at least a 30% decrease in the sum of the longest diameter (LD) of target lesions, referencing the screening sum LD. Target lesions=all measurable lesions up to 5 lesions per organ (10 lesions in total), representative of all involved organs, if possible; recorded and measured at screening. Non-target lesions=all other lesions.

Secondary outcomes

  1. Percentage of Participants With Best Overall Response (Clinical Benefit)

    Time frame: Baseline, every 4 cycles (1 cycle is defined as a 14 day duration) up to Cycle 25, then every 6 cycles until disease progression)

    Best response (CR, PR, or stable disease (SD) lasting ≥6 months) recorded from baseline to disease progression or recurrence (Progressive disease [PD]). CR=disappearance of all target and non-target lesions with normalization of tumor marker level; PR is ≥30% decrease in sum of LD of target lesions; SD=neither sufficient shrinkage to=PR nor sufficient increase to=PD, referencing smallest sum LD since treatment started; PD is ≥20% increase in sum of LD of target lesions referencing smallest sum of LD; appearance of ≥1 new lesions and/or unequivocal progression of existing non-target lesions.

  2. Time to Disease Progression

    Time frame: Baseline, every 4 cycles (1 cycle is defined as a 14 day duration) up to Cycle 25, then every 6 cycles until disease progression)

    Number of days to disease progression defined as the interval from the date of randomization until the first date that recurrence or progression is documented; progression (at least 20% increase in the sum of the LD of target lesions taking as reference the smallest sum of LD; appearance of 1 or more new lesions and/or unequivocal progression of existing non-target lesions).

  3. Time to Treatment Failure

    Time frame: Baseline until Progressive disease, death, or discontinuation of study treatment

    Number of days to treatment failure defined as interval from start of treatment to first date of progressive disease (at least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD since the treatment started; appearance of 1 or more new lesions and/or unequivocal progression of existing non-target lesions) or death or discontinuation of treatment due to Adverse Event, censored at last evaluation.

  4. Percentage of Participants Exhibiting Freedom From Progression

    Time frame: Baseline, 8 weeks, 6 months, 12 months, and 24 months

    Freedom from progression defined as CR (disappearance of all target and non-target lesions with normalization of tumor marker level), PR (at least a 30% decrease in sum of the LD of target lesions taking as reference the screening sum LD), or SD (neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD [at least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD since the treatment started; appearance of 1 or more new lesions and/or unequivocal progression of existing non-target lesions]).

  5. Duration of Response

    Time frame: Baseline, every 4 cycles (1 cycle is defined as a 14 day duration) up to Cycle 25, then every 6 cycles until disease progression)

    Duration of response is measured from the time measurement criteria are met for CR or PR (whichever status is recorded first) until the first date that reoccurrence or PD is objectively documented, taking as reference for PD the smallest measurements recorded since the treatment started. SD is measured from the start of the treatment until the criteria for disease progression are met, taking as reference the smallest measurements recorded since the treatment started; the minimal time interval for duration of SD is 8 weeks.

  6. Number of Participants With Survival

    Time frame: Baseline, every 4 cycles (1 cycle is defined as a 14 day duration) until death

    Number of participants with survival (alive) in the interval from start of treatment to last contact for participant or death as a result of any cause.

  7. Health Outcomes Assessment: EuroQol (EQ-5D) Health State Profile Score

    Time frame: Prior to baseline, Cycle 7 (Week 12) and final visit (within 15 days of stopping study treatment)

    EQ-5D is a self-administered questionnaire to assess health-related quality of life in 5 domains (mobility, self care, usual activities, pain or discomfort, and anxiety or depression). Scores from the 5 domains are used to calculate the Health State Profile Score as a single index value; range: 0.0 (death) to 1.0 (perfect health); higher scores indicate a better health state.

  8. Health Outcomes Assessment: European Organization for Research and Treatment of Cancer Quality of Life Questionaire (EORTC QLQ) BR23

    Time frame: Prior to baseline, Cycle 7 (Week 12) and final visit (within 15 days of stopping study treatment)

    Assess specificity of breast cancer symptoms relevant to participant's perceived quality of life (disease related symptoms of dry mouth, eye pain, hair loss, hot flushes, attractiveness, future health, sexual activity, arm or shoulder pain, breast pain, swollen breast, and skin problems on the breast). 23-item assessment of symptoms or problems during the past week (items 1-13 and 17-23) or during the past 4 weeks (items 14-16); range from 1 (not at all) to 4 (very much). Index scores transformed and range from 0 to 100; higher scores indicate higher level of functioning and quality of life.

  9. Number of Participants With Antitumor Response in Relation to Expression of Akt Phosphorylation, Cyclin D1, PTEN, and p27

    Time frame: Prior to baseline, after Cycle 4 (Week 8), after Cycle 8 (Week 14), and cross-over or final visit (within 15 days of stopping study treatment)

    Number of participants with antitumor response (CR [disappearance of all target and non-target lesions with normalization of tumor marker level] or PR [at least a 30% decrease in the sum of the longest diameter (LD) of target lesions, referencing the screening sum LD]) in relation to plasma levels of Akt phosphorylation, cyclin D1, PTEN, and p27.

  10. Area Under the Concentration-time Curve (AUC) Sum

    Time frame: Cycle 1 Day 1 (1 cycle is defined as a 14 day duration) , Cycle 3 Day 1, and Cycle 4 Day 1, Day 6, Day 9, Day 11, and Day 12

    Area under the concentration-time curve to infinity (AUC) measured as hours multiplied by nanograms divided by milliliters (hr*ng/mL) for CCI-779, sirolimus and letrozole. Sum is calculated as the sum of CCI-779 plus sirolimus AUCs (AUCsum).

  11. 24-hour Trough Concentration (C Trough)

    Time frame: Cycle 1 Day 1 (1 cycle is defined as a 14 day duration) , Cycle 3 Day 1, and Cycle 4 Day 1, Day 6, Day 9, Day 11, and Day 12

    C trough in whole blood measured as nanograms per milliliter (ng/mL).

Sponsors and collaborators

Lead sponsor

Wyeth is now a wholly owned subsidiary of Pfizer

Industry

Collaborators

  • Pfizer

Registry information

Official study title

A Phase 2 Randomized Open-Label Study Of Letrozole In Combination With Two Dose Levels And Schedules Of Oral Temsirolimus (CCI-779), Or Letrozole Alone, In Postmenopausal Women With Locally Advanced Or Metastatic Breast Cancer

Important dates

Study start
2002
Primary completion
2005
Study completion
2009
First posted
Jun 13, 2003
Registry last updated
Apr 15, 2011

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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