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S1314, Co-expression Extrapolation (COXEN) Program to Predict Chemotherapy Response in Patients With Bladder Cancer

A Randomized Phase II Study of Co-Expression Extrapolation (COXEN) With Neoadjuvant Chemotherapy for Localized, Muscle-Invasive Bladder Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02177695
Acronym
COXEN
Enrollment
237
Registered
2014-06-30
Start date
2014-08-28
Completion date
2022-12-01
Last updated
2024-09-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bladder Cancer

Keywords

Bladder Cancer, Neoadjuvant Chemotherapy, Coexpression Extrapolation, COXEN, S1314, SWOG

Brief summary

The primary focus of this study is to see if looking at tumor biomarkers using a program called coexpression extrapolation or COXEN may predict a patient's response to chemotherapy before surgery.

Detailed description

The COXEN program will not select a patient's therapy, but the type of chemotherapy that he/she will receive will be randomly decided. The patient's response to chemotherapy will be used to test the usefulness of the COXEN program, which is the main goal of this trial. Other potential tests to predict a patient's response to chemotherapy will also be evaluated. In this study, the patient may receive the treatment in Arm 1 (gemcitabine and cisplatin) or the treatment in Arm 2 \[methotrexate, vinblastine, doxorubicin, cisplatin, and filgrastim (or pegfilgrastim)\]. There will be about 230 people taking part in this study (115 in each arm).

Interventions

DRUGGemcitabine

Gemcitabine, 1000 mg/m2, IV (in the vein) on Days 1 and 8 of each 21 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.

DRUGCisplatin

Cisplatin, 70 mg/m2, IV (in the vein) on Day 1 of each 21 day cycle (or Day 1 or 2 of each 14 day cycle). Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.

DRUGMethotrexate

Methotrexate, 30 mg/m2, IV (in the vein) on Days 1 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.

DRUGVinblastine

Vinblastine, 3 mg/m2, IV (in the vein) on Days 1 or 2 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.

DRUGDoxorubicin

Doxorubicin, 30 mg/m2, IV (in the vein) on Days 1 or 2 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.

DRUGFilgrastim

Filgrastim, 5 mcg/kg, SubQ/IV (in the vein) on Days 3-7 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
SWOG Cancer Research Network
Lead SponsorNETWORK

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically proven bladder cancer (pure small cell carcinoma, pure adenocarcinoma, and pure squamous cell carcinoma histologies are excluded). * Stage cT2-T4a N0 M0 disease. * Documented muscle invasive disease with at least one of the following: disease measuring at least 10 mm on cross-sectional imaging OR the presence of tumor-associated hydronephrosis. * Staging scans with abdominal/pelvic CT or MRI scan and CT scan or x-ray of the chest within 56 days prior to registration. If alkaline phosphatase is above the treating institution's upper limit of normal (ULN), presence of suspicious bone pain, or if other clinical suspicion, a whole body bone scan is required within 56 days prior to registration. * Performance status = 0 or 1 * 18 years of age or older * Must have tumor tissue from transurethral resection of the bladder tumor (TURBT) available for submission that is sufficient for COXEN testing and must agree to submission of 20 (10 micron) slides plus 2 (5 micron) slides from the start and end of the 20 slides for a total of 22 unstained slides. * Must agree to collection of tissue (if residual disease is present), urine, and whole blood. * Must agree to participate in the translational medicine studies outlined in the protocol

Exclusion criteria

* Prior systemic cytotoxic chemotherapy or systemic anthracycline * Peripheral neuropathy \>/= Grade 2 * Class III/IV heart failure or known left ventricular ejection fraction (LVEF) \< 50% * Clinically relevant hearing impairment \> Grade 2 * Renal function, calculated creatinine clearance \< 60 mL/min * Hepatic function, total bilirubin \> 1.5 x institutional upper limit of normal (IULN) (or \> 2.5 x IULN with Gilbert's disease); AST & ALT \> 2 X IULN * Hematologic function, absolute neutrophil count (ANC) \< 1,500/mcL, hemoglobin \< 9 g/dL, and platelets \< 100,000/mcL * Hypersensitivity to cisplatin, gemcitabine, doxorubicin, vinblastine, methotrexate, or filgrastim/pegfilgrastim * Incidence of or uncontrolled medical illness (e.g. active cardiac symptoms, active systemic infection, etc.) * Pregnant or nursing females * No other prior malignancy is allowed except for the following: adequately treated basal cell or squamous cell skin cancer, in situ cervical cancer, adequately treated Stage I or II cancer from which the patient is currently in complete remission, or any other cancer from which the patient has been disease free for five years. However, patients with localized prostate cancer who are being followed by an active surveillance program are eligible.

Design outcomes

Primary

MeasureTime frameDescription
Correlation Between GC-and ddMVAC-COXEN Scoreup to 5 years post-registrationThe Pearson and Spearman correlation coefficients for GC-and ddMVAC-COXEN score were calculated and are reported below. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.
Assessment of Whether the Treatment-specific COXEN Score is Prognostic of pT0 RateUp to 5 years post registrationThe proportion of participants achieving pT0 in both favorable and unfavorable treatment specific-COXEN score categories. Unit of measure is the number of participants in each category that achieved pT0 \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.
Assessment of Whether the Treatment-specific COXEN Score is Prognostic of ≤ pT1 Rateup to 5 years post-registrationThe proportion of participants achieving \<=pT1 in both favorable and unfavorable treatment specific-COXEN score categories. Unit of measure is the number of participants in each category that achieved \<= pT1 \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.
Assessment of COXEN Score as a Predictive Factor Distinguishing Between GC and ddMVACup to 5 years post-registrationTo assess in a hypothesis generating fashion, the ability of COXEN to select for an individual chemotherapy regimen (GC vs DDMVAC) P-values are reported as a measure of whether COXEN can select between GC/DDMVAC and to determine the significance of interactions between treatment specific COXEN scores and treatment arms in models predicting either pT0 or \<= pT1. Interactions with p-values \> 0.05 are interpreted as not significant. \_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.

Secondary

MeasureTime frameDescription
Predictability of the CO-eXpression ExtrapolatioN (COXEN) Score to Direct Which of the Two Regimens the Patient Should Receive: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)Up to 5 years post registrationIn addition to stratification factors and dichotomous COXEN GEM score, an indicator for treatment arm and the interaction of treatment arm with COXEN GEM score was also included in a logistic regression model. A significant interaction would suggest that the respective COXEN GEM score was able to differentiate whether a patient was more likely to respond to one chemotherapy regimen over another. \*note that this is the same objective at Primary Outcome #3 above - this was erroneously listed twice in the protocol.
Value of Gene Expression Profiling in Predicting Overall Survival (OS)Up to 5 years post registration5-year OS curve was estimated using the Kaplan-Meier method. Included all COXEN evaluable participants regardless of arm assignment. The report groups were favorable vs. unfavorable COXEN status.
Pathologic T0 Rate Evaluation: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)Up to 5 years post-registrationPathologic complete response rate at the time of cystectomy following GC or DDMVAC treatment
Number of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDuration of treatment and follow up until death or 5 years post registrationAdverse Events (AEs) are reported by CTCAE Version 4.0. Only adverse events that are possibly, probably or definitely related to study drug are reported. Grade 3 is less severe than Grade 5. Grade 3 - Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care ADL\* (bathing, dressing and undressing, feeding self, using the toilet, taking medications, and not bedridden). Grade 4 - Life-threatening consequences; urgent intervention indicated. Grade 5 - Death related to AE \*ADL- Activities of Daily Living

Countries

United States

Participant flow

Pre-assignment details

237 participants were enrolled, but 10 were ineligible due to missing tissue, inadequate disease assessment and inadequate kidney function.

Participants by arm

ArmCount
Gemcitabine & Cisplatin
Gemcitabine, 1000 mg/m2, IV, Days 1&8, q 21 days x 4 cycles Cisplatin, 70 mg/m2, IV, Day 1, q 21 days x 4 cycles Gemcitabine: Gemcitabine, 1000 mg/m2, IV (in the vein) on Days 1 and 8 of each 21 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops. Cisplatin: Cisplatin, 70 mg/m2, IV (in the vein) on Day 1 of each 21 day cycle (or Day 1 or 2 of each 14 day cycle). Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.
115
Dose Dense MVAC
Methotrexate, 30 mg/m2, IV, Day 1, q 14 days x 4 cycles Vinblastine, 3 mg/m2, IV, Day 1 or 2, q 14 days x 4 cycles Doxorubicin, 30 mg/m2, IV, Day 1 or 2, q 14 days x 4 cycles Cisplatin, 70 mg/m2, IV, Day 1 or 2, q 14 days x 4 cycles Filgrastim, 5 mcg/kg, SubQ/IV, Days 3-7, q 14 days x 4 cycles Cisplatin: Cisplatin, 70 mg/m2, IV (in the vein) on Day 1 of each 21 day cycle (or Day 1 or 2 of each 14 day cycle). Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops. Methotrexate: Methotrexate, 30 mg/m2, IV (in the vein) on Days 1 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops. Vinblastine: Vinblastine, 3 mg/m2, IV (in the vein) on Days 1 or 2 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops. Doxorubicin: Doxorubicin, 30 mg/m2, IV (in the vein) on Days 1 or 2 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops. Filgrastim: Filgrastim, 5 mcg/kg, SubQ/IV (in the vein) on Days 3-7 of each 14 day cycle. Number of Cycles: 4 cycles or until progression or unacceptable toxicity develops.
112
Total227

Withdrawals & dropouts

PeriodReasonFG000FG001
ITT AnalysisIneligible55
Primary COXEN Analysisinadequate tissue submitted56
Primary COXEN Analysisinsufficient amount of chemotherapy received158
Primary COXEN AnalysisPathologic response not evaluated1313

Baseline characteristics

CharacteristicGemcitabine & CisplatinDose Dense MVACTotal
Age, Continuous64.9 years64.8 years64.8 years
Clinical stage
T2
102 Participants98 Participants200 Participants
Clinical stage
T3 or T4a
13 Participants14 Participants27 Participants
ddMVAC-COXEN score
Favorable
23 Participants30 Participants53 Participants
ddMVAC-COXEN score
Not Favorable
59 Participants55 Participants114 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
7 Participants5 Participants12 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
104 Participants105 Participants209 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
4 Participants2 Participants6 Participants
GC-COXEN score
Favorable
18 Participants25 Participants43 Participants
GC-COXEN score
Not favorable
64 Participants60 Participants124 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
4 Participants1 Participants5 Participants
Race (NIH/OMB)
Black or African American
7 Participants1 Participants8 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
10 Participants2 Participants12 Participants
Race (NIH/OMB)
White
94 Participants107 Participants201 Participants
Sex: Female, Male
Female
23 Participants13 Participants36 Participants
Sex: Female, Male
Male
92 Participants99 Participants191 Participants
Zubrod performance status
0
88 Participants86 Participants174 Participants
Zubrod performance status
1
27 Participants26 Participants53 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
28 / 11525 / 112
other
Total, other adverse events
112 / 115108 / 112
serious
Total, serious adverse events
1 / 1154 / 112

Outcome results

Primary

Assessment of COXEN Score as a Predictive Factor Distinguishing Between GC and ddMVAC

To assess in a hypothesis generating fashion, the ability of COXEN to select for an individual chemotherapy regimen (GC vs DDMVAC) P-values are reported as a measure of whether COXEN can select between GC/DDMVAC and to determine the significance of interactions between treatment specific COXEN scores and treatment arms in models predicting either pT0 or \<= pT1. Interactions with p-values \> 0.05 are interpreted as not significant. \_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.

Time frame: up to 5 years post-registration

Population: Eligible participants that were evaluable for COXEN analysis. Participants in this arm were pooled to test the ability of the COXEN algorithm to distinguish between GC and ddMVAC treatment, with the assumption that there is no interaction between the COXEN score and treatment arm.

ArmMeasureGroupValue (NUMBER)
Gemcitabine & CisplatinAssessment of COXEN Score as a Predictive Factor Distinguishing Between GC and ddMVACP-value of interaction term (GCscore*treatment arm) in model predicting pT00.88 p-value
Gemcitabine & CisplatinAssessment of COXEN Score as a Predictive Factor Distinguishing Between GC and ddMVACP-value of interaction term (GCscore*treatment arm) in logistic regression model predicting <=pT10.43 p-value
Gemcitabine & CisplatinAssessment of COXEN Score as a Predictive Factor Distinguishing Between GC and ddMVACP-value of interaction term (MVACscore*treatment arm) in logistic regression model predicting pT00.66 p-value
Gemcitabine & CisplatinAssessment of COXEN Score as a Predictive Factor Distinguishing Between GC and ddMVACP-value of interaction term (MVACscore*treatment arm) in logistic regression model predicting <=pT10.85 p-value
Primary

Assessment of Whether the Treatment-specific COXEN Score is Prognostic of pT0 Rate

The proportion of participants achieving pT0 in both favorable and unfavorable treatment specific-COXEN score categories. Unit of measure is the number of participants in each category that achieved pT0 \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.

Time frame: Up to 5 years post registration

Population: Eligible participants that were evaluable for COXEN analysis

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Gemcitabine & CisplatinAssessment of Whether the Treatment-specific COXEN Score is Prognostic of pT0 RateFavorable treatment-COXEN score8 Participants
Gemcitabine & CisplatinAssessment of Whether the Treatment-specific COXEN Score is Prognostic of pT0 RateUnfavorable treatment-COXEN score20 Participants
Dose Dense MVACAssessment of Whether the Treatment-specific COXEN Score is Prognostic of pT0 RateUnfavorable treatment-COXEN score17 Participants
Dose Dense MVACAssessment of Whether the Treatment-specific COXEN Score is Prognostic of pT0 RateFavorable treatment-COXEN score10 Participants
Comparison: To determine the relationship of GC COXEN scores to pT0, GC COXEN score (dichotomous, favorable vs. unfavorable) was tested in a logistic regression model predicting the outcome of pT0 within the GC treatment group.p-value: 0.195% CI: [0.82, 8.36]Regression, Logistic
Comparison: To determine the relationship of ddMVAC COXEN scores to pT0, ddMVAC COXEN score (dichotomous, favorable vs. unfavorable) was tested in a logistic regression model predicting the outcome of pT0 within the ddMVAC treatment group.p-value: 0.8295% CI: [0.42, 2.95]Regression, Logistic
Primary

Assessment of Whether the Treatment-specific COXEN Score is Prognostic of ≤ pT1 Rate

The proportion of participants achieving \<=pT1 in both favorable and unfavorable treatment specific-COXEN score categories. Unit of measure is the number of participants in each category that achieved \<= pT1 \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.

Time frame: up to 5 years post-registration

Population: Eligible participants that were evaluable for COXEN analysis

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Gemcitabine & CisplatinAssessment of Whether the Treatment-specific COXEN Score is Prognostic of ≤ pT1 RateFavorable treatment-COXEN score10 Participants
Gemcitabine & CisplatinAssessment of Whether the Treatment-specific COXEN Score is Prognostic of ≤ pT1 RateUnfavorable treatment-COXEN score30 Participants
Dose Dense MVACAssessment of Whether the Treatment-specific COXEN Score is Prognostic of ≤ pT1 RateFavorable treatment-COXEN score16 Participants
Dose Dense MVACAssessment of Whether the Treatment-specific COXEN Score is Prognostic of ≤ pT1 RateUnfavorable treatment-COXEN score31 Participants
Comparison: To determine the relationship of GC COXEN scores to \<= pT1, GC COXEN score (dichotomous, favorable vs. unfavorable) was tested in a logistic regression model predicting the outcome of pT1 or better within the GC treatment group.p-value: 0.0295% CI: [1.11, 4.89]Regression, Logistic
Comparison: To determine the relationship of ddMVAC COXEN scores to \<=pT1, ddMVAC COXEN score (dichotomous, favorable vs. unfavorable) was tested in a logistic regression model predicting the outcome of pT1 or better within the ddMVAC treatment group.p-value: 0.7695% CI: [0.46, 1.75]Regression, Logistic
Primary

Correlation Between GC-and ddMVAC-COXEN Score

The Pearson and Spearman correlation coefficients for GC-and ddMVAC-COXEN score were calculated and are reported below. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ The relationship of dose-dense methotrexate, vinblastin, doxorubicin, and cisplatin (DDMVAC)- and gemcitabine+cisplatin (GC)- specific CO-eXpression ExtrapolatioN (COXEN) scores This will be done in two ways: * By assessing whether the treatment-specific COXEN score is prognostic of pT0 rate or ≤ pT1 in this patient population and to assess in a preliminary fashion whether the COXEN score is a predictive factor distinguishing between these two chemotherapy regimens. . * By evaluating the correlation between the GC- and the DDMVAC-COXEN score.

Time frame: up to 5 years post-registration

Population: Eligible participants that were evaluable for COXEN analysis. Participants in this arm were pooled to test the ability of the COXEN algorithm to distinguish between GC and ddMVAC treatment, with the assumption that there is no interaction between the COXEN score and treatment arm.

ArmMeasureGroupValue (NUMBER)
Gemcitabine & CisplatinCorrelation Between GC-and ddMVAC-COXEN ScorePearson correlation coefficient0.385 correlation coefficient
Gemcitabine & CisplatinCorrelation Between GC-and ddMVAC-COXEN ScoreSpearman correlation coefficient0.386 correlation coefficient
Secondary

Number of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study Drugs

Adverse Events (AEs) are reported by CTCAE Version 4.0. Only adverse events that are possibly, probably or definitely related to study drug are reported. Grade 3 is less severe than Grade 5. Grade 3 - Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care ADL\* (bathing, dressing and undressing, feeding self, using the toilet, taking medications, and not bedridden). Grade 4 - Life-threatening consequences; urgent intervention indicated. Grade 5 - Death related to AE \*ADL- Activities of Daily Living

Time frame: Duration of treatment and follow up until death or 5 years post registration

Population: Participants who received at least one dose of protocol treatment, submitted toxicity data and were included in the ITT analysis.

ArmMeasureGroupValue (NUMBER)
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsInsomnia0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsFall0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsInvestigations - Other, specify0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsCreatinine increased0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsKidney infection1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsFatigue3 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsLung infection0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsCardiac arrest0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsLymphocyte count decreased2 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsFebrile neutropenia2 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsMucositis oral0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDehydration0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsNausea1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsAcute kidney injury0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsNeutrophil count decreased20 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHeadache0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsPhlebitis infective1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDiarrhea0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsPlatelet count decreased11 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHeart failure0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsProteinuria1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsAlanine aminotransferase increased1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDizziness1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsSepsis0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHyperglycemia3 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsSyncope1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsCardiac disorders - Other, specify1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsThromboembolic event4 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHyperkalemia2 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsTinnitus1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsEnterocolitis infectious0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsUrinary tract infection4 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypertension1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsUrinary tract obstruction1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypocalcemia0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsVestibular disorder0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsBronchial infection0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsVomiting0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypokalemia0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsWhite blood cell decreased5 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsErectile dysfunction1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypomagnesemia0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsChronic kidney disease2 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDyspnea1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHematuria0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsEsophagitis0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHyponatremia5 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsInfections and infestations - Other, specify0 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypophosphatemia1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsRenal and urinary disorders - Other, specify1 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsAnemia10 Participants
Gemcitabine & CisplatinNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsUpper gastrointestinal hemorrhage0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsNausea3 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsAcute kidney injury1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsAlanine aminotransferase increased0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsAnemia9 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsBronchial infection1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsCardiac arrest1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsCardiac disorders - Other, specify0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsChronic kidney disease1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsCreatinine increased5 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDiarrhea2 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDyspnea0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsEnterocolitis infectious1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsErectile dysfunction0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsEsophagitis1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsFall1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsFatigue5 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsFebrile neutropenia2 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHeadache1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHeart failure1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHematuria1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHyperglycemia2 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHyperkalemia0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypocalcemia1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypokalemia3 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypomagnesemia2 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypophosphatemia0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsInfections and infestations - Other, specify3 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsInsomnia1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsInvestigations - Other, specify1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsKidney infection0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsLung infection1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsLymphocyte count decreased3 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsMucositis oral5 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsNeutrophil count decreased10 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsPhlebitis infective0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsPlatelet count decreased5 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsProteinuria0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsRenal and urinary disorders - Other, specify0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsSepsis1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsSyncope1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsThromboembolic event1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsUpper gastrointestinal hemorrhage1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsUrinary tract infection3 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsUrinary tract obstruction1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsVestibular disorder1 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsVomiting3 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsWhite blood cell decreased6 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDehydration2 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsDizziness0 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHypertension3 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsHyponatremia2 Participants
Dose Dense MVACNumber of Participants With Gr 3 Through 5 Adverse Events That Are Related to Study DrugsTinnitus0 Participants
Secondary

Pathologic T0 Rate Evaluation: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)

Pathologic complete response rate at the time of cystectomy following GC or DDMVAC treatment

Time frame: Up to 5 years post-registration

Population: Participants who received treatment in Gemcitabine \& Cisplatin and Dose Dense MVAC arms.

ArmMeasureValue (NUMBER)
Gemcitabine & CisplatinPathologic T0 Rate Evaluation: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)36 percentage of participants
Dose Dense MVACPathologic T0 Rate Evaluation: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)42 percentage of participants
Secondary

Predictability of the CO-eXpression ExtrapolatioN (COXEN) Score to Direct Which of the Two Regimens the Patient Should Receive: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)

In addition to stratification factors and dichotomous COXEN GEM score, an indicator for treatment arm and the interaction of treatment arm with COXEN GEM score was also included in a logistic regression model. A significant interaction would suggest that the respective COXEN GEM score was able to differentiate whether a patient was more likely to respond to one chemotherapy regimen over another. \*note that this is the same objective at Primary Outcome #3 above - this was erroneously listed twice in the protocol.

Time frame: Up to 5 years post registration

Population: Eligible participants that were evaluable for COXEN analysis. Participants in this arm were pooled to test the ability of the COXEN algorithm to distinguish between GC and ddMVAC treatment, with the assumption that there is no interaction between the COXEN score and treatment arm.

ArmMeasureGroupValue (NUMBER)
Gemcitabine & CisplatinPredictability of the CO-eXpression ExtrapolatioN (COXEN) Score to Direct Which of the Two Regimens the Patient Should Receive: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)Pvalue of interaction term (GCscore*treatment arm) in model predicting pT00.88 p-value
Gemcitabine & CisplatinPredictability of the CO-eXpression ExtrapolatioN (COXEN) Score to Direct Which of the Two Regimens the Patient Should Receive: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)Pvalue of interaction term (GCscore*treatment arm) in model predicting <=pT10.43 p-value
Gemcitabine & CisplatinPredictability of the CO-eXpression ExtrapolatioN (COXEN) Score to Direct Which of the Two Regimens the Patient Should Receive: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)Pvalue of interaction term (MVACscore*treatment arm) in model predicting pT00.66 p-value
Gemcitabine & CisplatinPredictability of the CO-eXpression ExtrapolatioN (COXEN) Score to Direct Which of the Two Regimens the Patient Should Receive: Gemcitabine+Cisplatin (GC) Versus Dose-dense Methotrexate, Vinblastin, Doxorubicin, and Cisplatin (DDMVAC)Pvalue of interaction term (MVACscore*treatment arm) in model predicting <=pT10.85 p-value
Secondary

Value of Gene Expression Profiling in Predicting Overall Survival (OS)

5-year OS curve was estimated using the Kaplan-Meier method. Included all COXEN evaluable participants regardless of arm assignment. The report groups were favorable vs. unfavorable COXEN status.

Time frame: Up to 5 years post registration

Population: Eligible participants across both arms that were evaluable for COXEN analysis.

ArmMeasureGroupValue (NUMBER)
Gemcitabine & CisplatinValue of Gene Expression Profiling in Predicting Overall Survival (OS)Favorable COXEN Status76 Percent of Participants
Gemcitabine & CisplatinValue of Gene Expression Profiling in Predicting Overall Survival (OS)Unfavorable COXEN Status71 Percent of Participants

Source: ClinicalTrials.gov · Data processed: Feb 26, 2026