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Slide 1 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10
Slide 2 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment
Slide 3 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min)
Slide 4 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210
Slide 5 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210
Slide 6 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor
Slide 7 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor 60Cu vs. 64Cu-ATSM: Cervical Cancer Lewis, et al., JNM 2008; 49:1177 Half-life 60Cu 23.7 min 64Cu 12.7 hr Patients studied with 60Cu-ATSM-PET and 64Cu-ATSM-PET on 2 separate days (range 1 - 9 days, averaged 5.8 days)
Slide 8 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor 60Cu vs. 64Cu-ATSM: Cervical Cancer Lewis, et al., JNM 2008; 49:1177 Half-life 60Cu 23.7 min 64Cu 12.7 hr Patients studied with 60Cu-ATSM-PET and 64Cu-ATSM-PET on 2 separate days (range 1 - 9 days, averaged 5.8 days) Specific Hypotheses 64Cu-ATSM-PET/CT distinguishes patients with poorer survival rate from those with better survival rate prior to initiation of therapy 64Cu-ATSM-PET/CT provides unique prognostic information different from that revealed by known prognostic factors in an invasive squamous cell cervical cancer Primary Objective To determine if higher 64Cu-ATSM uptake is associated with lower progression-free survival Study Hypotheses and Objectives
Slide 9 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor 60Cu vs. 64Cu-ATSM: Cervical Cancer Lewis, et al., JNM 2008; 49:1177 Half-life 60Cu 23.7 min 64Cu 12.7 hr Patients studied with 60Cu-ATSM-PET and 64Cu-ATSM-PET on 2 separate days (range 1 - 9 days, averaged 5.8 days) Specific Hypotheses 64Cu-ATSM-PET/CT distinguishes patients with poorer survival rate from those with better survival rate prior to initiation of therapy 64Cu-ATSM-PET/CT provides unique prognostic information different from that revealed by known prognostic factors in an invasive squamous cell cervical cancer Primary Objective To determine if higher 64Cu-ATSM uptake is associated with lower progression-free survival Study Hypotheses and Objectives Primary Endpoint: to assess the relationship between 64Cu-ATSM uptake in the primary cervical tumor and progression-free survival after chemoradiotherapy. Secondary Endpoints: to assess the relationship between 64Cu-ATSM uptake and: overall survival rates of local recurrence and development of distant metastasis frequency of complete metabolic response by FDG-PET tumor volume and the frequency of lymph node metastasis at diagnosis markers of tumor hypoxia assessed by immunohistochemistry on biopsy tissue from the primary tumor ACRIN 6682 Endpoints
Slide 10 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor 60Cu vs. 64Cu-ATSM: Cervical Cancer Lewis, et al., JNM 2008; 49:1177 Half-life 60Cu 23.7 min 64Cu 12.7 hr Patients studied with 60Cu-ATSM-PET and 64Cu-ATSM-PET on 2 separate days (range 1 - 9 days, averaged 5.8 days) Specific Hypotheses 64Cu-ATSM-PET/CT distinguishes patients with poorer survival rate from those with better survival rate prior to initiation of therapy 64Cu-ATSM-PET/CT provides unique prognostic information different from that revealed by known prognostic factors in an invasive squamous cell cervical cancer Primary Objective To determine if higher 64Cu-ATSM uptake is associated with lower progression-free survival Study Hypotheses and Objectives Primary Endpoint: to assess the relationship between 64Cu-ATSM uptake in the primary cervical tumor and progression-free survival after chemoradiotherapy. Secondary Endpoints: to assess the relationship between 64Cu-ATSM uptake and: overall survival rates of local recurrence and development of distant metastasis frequency of complete metabolic response by FDG-PET tumor volume and the frequency of lymph node metastasis at diagnosis markers of tumor hypoxia assessed by immunohistochemistry on biopsy tissue from the primary tumor ACRIN 6682 Endpoints Pre-therapy clinical whole-body FDG-PET/CT Stages IB2 –IVA invasive squamous cell carcinoma, scheduled to undergo radiation therapy and concurrent cisplatin chemotherapy Pre-therapy pelvic 64Cu-ATSM-PET/CT and analysis of tumor biopsy for hypoxic markers ACRIN 6682 Schema Concurrent chemoradiotherapy Clinical FDG-PET/CT three (3) months after completion of therapy Clinical follow-up for detection of recurrence and/or death N=100, enrollment period=18 months
Slide 11 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor 60Cu vs. 64Cu-ATSM: Cervical Cancer Lewis, et al., JNM 2008; 49:1177 Half-life 60Cu 23.7 min 64Cu 12.7 hr Patients studied with 60Cu-ATSM-PET and 64Cu-ATSM-PET on 2 separate days (range 1 - 9 days, averaged 5.8 days) Specific Hypotheses 64Cu-ATSM-PET/CT distinguishes patients with poorer survival rate from those with better survival rate prior to initiation of therapy 64Cu-ATSM-PET/CT provides unique prognostic information different from that revealed by known prognostic factors in an invasive squamous cell cervical cancer Primary Objective To determine if higher 64Cu-ATSM uptake is associated with lower progression-free survival Study Hypotheses and Objectives Primary Endpoint: to assess the relationship between 64Cu-ATSM uptake in the primary cervical tumor and progression-free survival after chemoradiotherapy. Secondary Endpoints: to assess the relationship between 64Cu-ATSM uptake and: overall survival rates of local recurrence and development of distant metastasis frequency of complete metabolic response by FDG-PET tumor volume and the frequency of lymph node metastasis at diagnosis markers of tumor hypoxia assessed by immunohistochemistry on biopsy tissue from the primary tumor ACRIN 6682 Endpoints Pre-therapy clinical whole-body FDG-PET/CT Stages IB2 –IVA invasive squamous cell carcinoma, scheduled to undergo radiation therapy and concurrent cisplatin chemotherapy Pre-therapy pelvic 64Cu-ATSM-PET/CT and analysis of tumor biopsy for hypoxic markers ACRIN 6682 Schema Concurrent chemoradiotherapy Clinical FDG-PET/CT three (3) months after completion of therapy Clinical follow-up for detection of recurrence and/or death N=100, enrollment period=18 months Protocol Current Accrual: 7 Expecting New Sites for Accrual by late Fall 2010 Current Amendment approved by CTEP to address changes in Cu-ATSM kit formulation IND Amendment submitted August 2010 to address changes in Cu-ATSM kit formulation and compounding process Radiopharmacy Support Have continued work with radiopharmacy to support receiving the kit and compounding the dose for centers that do not have the pharmacy support to compound the dose (Readiness Oct-Nov 2010) ACRIN 6682 Status
Slide 12 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor 60Cu vs. 64Cu-ATSM: Cervical Cancer Lewis, et al., JNM 2008; 49:1177 Half-life 60Cu 23.7 min 64Cu 12.7 hr Patients studied with 60Cu-ATSM-PET and 64Cu-ATSM-PET on 2 separate days (range 1 - 9 days, averaged 5.8 days) Specific Hypotheses 64Cu-ATSM-PET/CT distinguishes patients with poorer survival rate from those with better survival rate prior to initiation of therapy 64Cu-ATSM-PET/CT provides unique prognostic information different from that revealed by known prognostic factors in an invasive squamous cell cervical cancer Primary Objective To determine if higher 64Cu-ATSM uptake is associated with lower progression-free survival Study Hypotheses and Objectives Primary Endpoint: to assess the relationship between 64Cu-ATSM uptake in the primary cervical tumor and progression-free survival after chemoradiotherapy. Secondary Endpoints: to assess the relationship between 64Cu-ATSM uptake and: overall survival rates of local recurrence and development of distant metastasis frequency of complete metabolic response by FDG-PET tumor volume and the frequency of lymph node metastasis at diagnosis markers of tumor hypoxia assessed by immunohistochemistry on biopsy tissue from the primary tumor ACRIN 6682 Endpoints Pre-therapy clinical whole-body FDG-PET/CT Stages IB2 –IVA invasive squamous cell carcinoma, scheduled to undergo radiation therapy and concurrent cisplatin chemotherapy Pre-therapy pelvic 64Cu-ATSM-PET/CT and analysis of tumor biopsy for hypoxic markers ACRIN 6682 Schema Concurrent chemoradiotherapy Clinical FDG-PET/CT three (3) months after completion of therapy Clinical follow-up for detection of recurrence and/or death N=100, enrollment period=18 months Protocol Current Accrual: 7 Expecting New Sites for Accrual by late Fall 2010 Current Amendment approved by CTEP to address changes in Cu-ATSM kit formulation IND Amendment submitted August 2010 to address changes in Cu-ATSM kit formulation and compounding process Radiopharmacy Support Have continued work with radiopharmacy to support receiving the kit and compounding the dose for centers that do not have the pharmacy support to compound the dose (Readiness Oct-Nov 2010) ACRIN 6682 Status Site Currently Accruing: Washington University University of Iowa (pending PET Qualification) Weill Cornell (pending Cu-ATSM training) Sites Pending Participation Dependent on 3rd party Radiopharmacy Boston Medical Fox Chase MD Anderson Clinical Radiologist Able to receive Cu-ATSM in Site Pharmacy City of Hope Duke University University of Wisconsin Johns Hopkins ACRIN 6682 Status Memorial Sloan-Kettering Cancer Center Wake Forest Medical Center University of Southern California Wayne State University University of Alabama, Birmingham
Slide 13 - ACRIN 6682 Phase II Trial of 64Cu-ATSM PET/CT in Cervical Cancer Principal Investigator: Farrokh Dehdashti, MD 9/30/10 Background Tumor hypoxia is an important prognostic factor in cervical cancer and predicts for decreased overall and disease-free survival Hypoxic-measuring tools are needed: To predict patient outcome To select treatments on an individual basis To evaluate early response to treatment Measurement of Hypoxia with Cu-ATSM Copper labeled dithiosemicarbazone complex (Cu-ATSM) (Fujibayashi et al.,1989, 1997; John et al., 1990; Taniuchi et al., 1995) Highly lipophilic - high membrane permeability - high extraction Reduced by bioreductive enzymes only in hypoxic cells (mitochondria in non-tumor and microsomal/cytosol in tumors) Retained in hypoxic tissues, but rapidly washes out of normoxic tissues Good hypoxic/normoxic tissue activity ratio (hypoxic/normoxic of 4.0 at 15 min) Prelimiary Data 60Cu-ATSM: Cervical Cancer 38 patients undergoing radiotherapy  chemotherapy Pre-therapy 60Cu-ATSM-PET (tumor/muscle ratio) Response to therapy assessed (follow-up 3-79 months) Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer Dehdashti et al., JNM 2008; 49:210 60Cu-ATSM: Cervical Cancer FDG 60Cu-ATSM T/M = 3.0 Responder T/M = 4.5 Non-responder Dehdashti et al., JNM 2008; 49:210 B=Bladder, P=Primary Tumor 60Cu vs. 64Cu-ATSM: Cervical Cancer Lewis, et al., JNM 2008; 49:1177 Half-life 60Cu 23.7 min 64Cu 12.7 hr Patients studied with 60Cu-ATSM-PET and 64Cu-ATSM-PET on 2 separate days (range 1 - 9 days, averaged 5.8 days) Specific Hypotheses 64Cu-ATSM-PET/CT distinguishes patients with poorer survival rate from those with better survival rate prior to initiation of therapy 64Cu-ATSM-PET/CT provides unique prognostic information different from that revealed by known prognostic factors in an invasive squamous cell cervical cancer Primary Objective To determine if higher 64Cu-ATSM uptake is associated with lower progression-free survival Study Hypotheses and Objectives Primary Endpoint: to assess the relationship between 64Cu-ATSM uptake in the primary cervical tumor and progression-free survival after chemoradiotherapy. Secondary Endpoints: to assess the relationship between 64Cu-ATSM uptake and: overall survival rates of local recurrence and development of distant metastasis frequency of complete metabolic response by FDG-PET tumor volume and the frequency of lymph node metastasis at diagnosis markers of tumor hypoxia assessed by immunohistochemistry on biopsy tissue from the primary tumor ACRIN 6682 Endpoints Pre-therapy clinical whole-body FDG-PET/CT Stages IB2 –IVA invasive squamous cell carcinoma, scheduled to undergo radiation therapy and concurrent cisplatin chemotherapy Pre-therapy pelvic 64Cu-ATSM-PET/CT and analysis of tumor biopsy for hypoxic markers ACRIN 6682 Schema Concurrent chemoradiotherapy Clinical FDG-PET/CT three (3) months after completion of therapy Clinical follow-up for detection of recurrence and/or death N=100, enrollment period=18 months Protocol Current Accrual: 7 Expecting New Sites for Accrual by late Fall 2010 Current Amendment approved by CTEP to address changes in Cu-ATSM kit formulation IND Amendment submitted August 2010 to address changes in Cu-ATSM kit formulation and compounding process Radiopharmacy Support Have continued work with radiopharmacy to support receiving the kit and compounding the dose for centers that do not have the pharmacy support to compound the dose (Readiness Oct-Nov 2010) ACRIN 6682 Status Site Currently Accruing: Washington University University of Iowa (pending PET Qualification) Weill Cornell (pending Cu-ATSM training) Sites Pending Participation Dependent on 3rd party Radiopharmacy Boston Medical Fox Chase MD Anderson Clinical Radiologist Able to receive Cu-ATSM in Site Pharmacy City of Hope Duke University University of Wisconsin Johns Hopkins ACRIN 6682 Status Memorial Sloan-Kettering Cancer Center Wake Forest Medical Center University of Southern California Wayne State University University of Alabama, Birmingham Thank You