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Exposure–response analyses of trastuzumab emtansine in patients with HER2-positive advanced breast cancer previously treated with trastuzumab and a taxane

Purpose In the phase III EMILIA study, trastuzumab emtansine (T-DM1) significantly improved progression-free survival (PFS) and overall survival (OS) versus capecitabine plus lapatinib (control) in previously treated human epidermal growth factor receptor 2-positive advanced breast cancer. Using EMI...

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Published in:Cancer chemotherapy and pharmacology 2017-12, Vol.80 (6), p.1079-1090
Main Authors: Li, Chunze, Wang, Bei, Chen, Shang-Chiung, Wada, Russell, Lu, Dan, Wang, Xin, Polhamus, Daniel, French, Jonathan, Vadhavkar, Shweta, Strasak, Alexander, Smitt, Melanie, Joshi, Amita, Samant, Meghna, Quartino, Angelica, Jin, Jin, Girish, Sandhya
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cited_by cdi_FETCH-LOGICAL-c372t-ff836c030580a4484af97762a9b5eb1efcbd669d8b85869950a39dbccd3269593
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container_issue 6
container_start_page 1079
container_title Cancer chemotherapy and pharmacology
container_volume 80
creator Li, Chunze
Wang, Bei
Chen, Shang-Chiung
Wada, Russell
Lu, Dan
Wang, Xin
Polhamus, Daniel
French, Jonathan
Vadhavkar, Shweta
Strasak, Alexander
Smitt, Melanie
Joshi, Amita
Samant, Meghna
Quartino, Angelica
Jin, Jin
Girish, Sandhya
description Purpose In the phase III EMILIA study, trastuzumab emtansine (T-DM1) significantly improved progression-free survival (PFS) and overall survival (OS) versus capecitabine plus lapatinib (control) in previously treated human epidermal growth factor receptor 2-positive advanced breast cancer. Using EMILIA data, we evaluated the T-DM1 exposure–response relationship. Methods Exposure–response relationships were examined with four exposure metrics [model-predicted and observed minimum concentration ( C min ) and area under the concentration–time curve from time zero to day 21 of T-DM1 at cycle 1] and multiple efficacy (OS, PFS, objective response rate) and safety (grade ≥ 3 adverse events, grade ≥ 3 thrombocytopenia, grade ≥ 3 hepatotoxicity) endpoints. Results An apparent exposure–response trend was observed between model-predicted exposure metrics and efficacy; trends for observed exposure metrics were shallower and often not significant. Although median OS and PFS were numerically longer in patients with higher versus lower model-predicted cycle 1 C min , OS and PFS hazard ratios for T-DM1-treated patients in the lowest exposure quartile ( Q 1) versus control were
doi_str_mv 10.1007/s00280-017-3440-4
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Using EMILIA data, we evaluated the T-DM1 exposure–response relationship. Methods Exposure–response relationships were examined with four exposure metrics [model-predicted and observed minimum concentration ( C min ) and area under the concentration–time curve from time zero to day 21 of T-DM1 at cycle 1] and multiple efficacy (OS, PFS, objective response rate) and safety (grade ≥ 3 adverse events, grade ≥ 3 thrombocytopenia, grade ≥ 3 hepatotoxicity) endpoints. Results An apparent exposure–response trend was observed between model-predicted exposure metrics and efficacy; trends for observed exposure metrics were shallower and often not significant. Although median OS and PFS were numerically longer in patients with higher versus lower model-predicted cycle 1 C min , OS and PFS hazard ratios for T-DM1-treated patients in the lowest exposure quartile ( Q 1) versus control were &lt; 1 after adjusting for baseline risk factors (e.g., ECOG status, tumor burden, measurable disease, and number of disease sites). No meaningful exposure–response relationship was observed for any safety endpoints. Conclusion Exposure–response relationships for efficacy were inconsistent across exposure metrics; model-predicted cycle 1 C min showed the strongest exposure–response trend. The Q 1 subgroup based on model-predicted cycle 1 C min had numerically similar or better OS and PFS versus control following covariate adjustment. The approved T-DM1 dose (3.6 mg/kg every 3 weeks) has a positive benefit–risk ratio versus control, even for the T-DM1 Q 1 subgroup.</description><identifier>ISSN: 0344-5704</identifier><identifier>EISSN: 1432-0843</identifier><identifier>DOI: 10.1007/s00280-017-3440-4</identifier><identifier>PMID: 29022084</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Antineoplastic Agents, Immunological - therapeutic use ; Antineoplastic Combined Chemotherapy Protocols - therapeutic use ; Breast cancer ; Breast Neoplasms - drug therapy ; Breast Neoplasms - pathology ; Bridged-Ring Compounds - therapeutic use ; Cancer ; Cancer Research ; Effectiveness ; Epidermal growth factor ; ErbB-2 protein ; Exposure ; Female ; Hepatotoxicity ; Humans ; Immunotherapy ; Maytansine - analogs &amp; derivatives ; Maytansine - therapeutic use ; Medicine ; Medicine &amp; Public Health ; Middle Aged ; Monoclonal antibodies ; Numerical prediction ; Oncology ; Original Article ; Patients ; Pharmacology/Toxicology ; Quality ; Receptor, ErbB-2 - metabolism ; Risk analysis ; Risk factors ; Risk management ; Survival ; Targeted cancer therapy ; Taxanes ; Taxoids - therapeutic use ; Thrombocytopenia ; Trastuzumab ; Trastuzumab - therapeutic use ; Trends</subject><ispartof>Cancer chemotherapy and pharmacology, 2017-12, Vol.80 (6), p.1079-1090</ispartof><rights>Springer-Verlag GmbH Germany 2017</rights><rights>Cancer Chemotherapy and Pharmacology is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-ff836c030580a4484af97762a9b5eb1efcbd669d8b85869950a39dbccd3269593</citedby><cites>FETCH-LOGICAL-c372t-ff836c030580a4484af97762a9b5eb1efcbd669d8b85869950a39dbccd3269593</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29022084$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Chunze</creatorcontrib><creatorcontrib>Wang, Bei</creatorcontrib><creatorcontrib>Chen, Shang-Chiung</creatorcontrib><creatorcontrib>Wada, Russell</creatorcontrib><creatorcontrib>Lu, Dan</creatorcontrib><creatorcontrib>Wang, Xin</creatorcontrib><creatorcontrib>Polhamus, Daniel</creatorcontrib><creatorcontrib>French, Jonathan</creatorcontrib><creatorcontrib>Vadhavkar, Shweta</creatorcontrib><creatorcontrib>Strasak, Alexander</creatorcontrib><creatorcontrib>Smitt, Melanie</creatorcontrib><creatorcontrib>Joshi, Amita</creatorcontrib><creatorcontrib>Samant, Meghna</creatorcontrib><creatorcontrib>Quartino, Angelica</creatorcontrib><creatorcontrib>Jin, Jin</creatorcontrib><creatorcontrib>Girish, Sandhya</creatorcontrib><title>Exposure–response analyses of trastuzumab emtansine in patients with HER2-positive advanced breast cancer previously treated with trastuzumab and a taxane</title><title>Cancer chemotherapy and pharmacology</title><addtitle>Cancer Chemother Pharmacol</addtitle><addtitle>Cancer Chemother Pharmacol</addtitle><description>Purpose In the phase III EMILIA study, trastuzumab emtansine (T-DM1) significantly improved progression-free survival (PFS) and overall survival (OS) versus capecitabine plus lapatinib (control) in previously treated human epidermal growth factor receptor 2-positive advanced breast cancer. Using EMILIA data, we evaluated the T-DM1 exposure–response relationship. Methods Exposure–response relationships were examined with four exposure metrics [model-predicted and observed minimum concentration ( C min ) and area under the concentration–time curve from time zero to day 21 of T-DM1 at cycle 1] and multiple efficacy (OS, PFS, objective response rate) and safety (grade ≥ 3 adverse events, grade ≥ 3 thrombocytopenia, grade ≥ 3 hepatotoxicity) endpoints. Results An apparent exposure–response trend was observed between model-predicted exposure metrics and efficacy; trends for observed exposure metrics were shallower and often not significant. Although median OS and PFS were numerically longer in patients with higher versus lower model-predicted cycle 1 C min , OS and PFS hazard ratios for T-DM1-treated patients in the lowest exposure quartile ( Q 1) versus control were &lt; 1 after adjusting for baseline risk factors (e.g., ECOG status, tumor burden, measurable disease, and number of disease sites). No meaningful exposure–response relationship was observed for any safety endpoints. Conclusion Exposure–response relationships for efficacy were inconsistent across exposure metrics; model-predicted cycle 1 C min showed the strongest exposure–response trend. The Q 1 subgroup based on model-predicted cycle 1 C min had numerically similar or better OS and PFS versus control following covariate adjustment. The approved T-DM1 dose (3.6 mg/kg every 3 weeks) has a positive benefit–risk ratio versus control, even for the T-DM1 Q 1 subgroup.</description><subject>Antineoplastic Agents, Immunological - therapeutic use</subject><subject>Antineoplastic Combined Chemotherapy Protocols - therapeutic use</subject><subject>Breast cancer</subject><subject>Breast Neoplasms - drug therapy</subject><subject>Breast Neoplasms - pathology</subject><subject>Bridged-Ring Compounds - therapeutic use</subject><subject>Cancer</subject><subject>Cancer Research</subject><subject>Effectiveness</subject><subject>Epidermal growth factor</subject><subject>ErbB-2 protein</subject><subject>Exposure</subject><subject>Female</subject><subject>Hepatotoxicity</subject><subject>Humans</subject><subject>Immunotherapy</subject><subject>Maytansine - analogs &amp; derivatives</subject><subject>Maytansine - therapeutic use</subject><subject>Medicine</subject><subject>Medicine &amp; Public Health</subject><subject>Middle Aged</subject><subject>Monoclonal antibodies</subject><subject>Numerical prediction</subject><subject>Oncology</subject><subject>Original Article</subject><subject>Patients</subject><subject>Pharmacology/Toxicology</subject><subject>Quality</subject><subject>Receptor, ErbB-2 - metabolism</subject><subject>Risk analysis</subject><subject>Risk factors</subject><subject>Risk management</subject><subject>Survival</subject><subject>Targeted cancer therapy</subject><subject>Taxanes</subject><subject>Taxoids - therapeutic use</subject><subject>Thrombocytopenia</subject><subject>Trastuzumab</subject><subject>Trastuzumab - therapeutic use</subject><subject>Trends</subject><issn>0344-5704</issn><issn>1432-0843</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp1kc1u1DAURi1URIfCA3SDLHVtuP5JYi9RNVCkSkgI1paT3ECqGSf4OkOHFe_AlqfjSfAwLeqGlWX7fOdK92PsXMJLCdC8IgBlQYBshDYGhHnEVtJoJcAafcJWUF5F1YA5ZU-JbgDASK2fsFPlQKkCrdiv9e080ZLw94-fCWmeIiEPMWz2hMSngecUKC_fl21oOW5ziDRG5GPkc8gjxkz825i_8Kv1ByWKaczjrgj6XYgd9rxNWOK8O9wSnxPuxmmhzb5oMeQC_A0_nBFizwPP4TZEfMYeD2FD-PzuPGOf3qw_Xl6J6_dv312-vhadblQWw2B13YGGykIwxpowuKapVXBtha3EoWv7una9bW1la-cqCNr1bdf1WtWucvqMXRy9c5q-LkjZ30xLKksgL12trVG1UoWSR6pLE1HCwc9p3Ia09xL8oQ9_7MOXPvyhD29K5sWdeWm32P9L3BdQAHUEqHzFz5gejP6v9Q-t75pG</recordid><startdate>20171201</startdate><enddate>20171201</enddate><creator>Li, Chunze</creator><creator>Wang, Bei</creator><creator>Chen, Shang-Chiung</creator><creator>Wada, Russell</creator><creator>Lu, Dan</creator><creator>Wang, Xin</creator><creator>Polhamus, Daniel</creator><creator>French, Jonathan</creator><creator>Vadhavkar, Shweta</creator><creator>Strasak, Alexander</creator><creator>Smitt, Melanie</creator><creator>Joshi, Amita</creator><creator>Samant, Meghna</creator><creator>Quartino, Angelica</creator><creator>Jin, Jin</creator><creator>Girish, Sandhya</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TO</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>H94</scope><scope>K9.</scope><scope>M0S</scope><scope>M1P</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20171201</creationdate><title>Exposure–response analyses of trastuzumab emtansine in patients with HER2-positive advanced breast cancer previously treated with trastuzumab and a taxane</title><author>Li, Chunze ; Wang, Bei ; Chen, Shang-Chiung ; Wada, Russell ; Lu, Dan ; Wang, Xin ; Polhamus, Daniel ; French, Jonathan ; Vadhavkar, Shweta ; Strasak, Alexander ; Smitt, Melanie ; Joshi, Amita ; Samant, Meghna ; Quartino, Angelica ; Jin, Jin ; Girish, Sandhya</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-ff836c030580a4484af97762a9b5eb1efcbd669d8b85869950a39dbccd3269593</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Antineoplastic Agents, Immunological - therapeutic use</topic><topic>Antineoplastic Combined Chemotherapy Protocols - therapeutic use</topic><topic>Breast cancer</topic><topic>Breast Neoplasms - drug therapy</topic><topic>Breast Neoplasms - pathology</topic><topic>Bridged-Ring Compounds - therapeutic use</topic><topic>Cancer</topic><topic>Cancer Research</topic><topic>Effectiveness</topic><topic>Epidermal growth factor</topic><topic>ErbB-2 protein</topic><topic>Exposure</topic><topic>Female</topic><topic>Hepatotoxicity</topic><topic>Humans</topic><topic>Immunotherapy</topic><topic>Maytansine - analogs &amp; 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Using EMILIA data, we evaluated the T-DM1 exposure–response relationship. Methods Exposure–response relationships were examined with four exposure metrics [model-predicted and observed minimum concentration ( C min ) and area under the concentration–time curve from time zero to day 21 of T-DM1 at cycle 1] and multiple efficacy (OS, PFS, objective response rate) and safety (grade ≥ 3 adverse events, grade ≥ 3 thrombocytopenia, grade ≥ 3 hepatotoxicity) endpoints. Results An apparent exposure–response trend was observed between model-predicted exposure metrics and efficacy; trends for observed exposure metrics were shallower and often not significant. Although median OS and PFS were numerically longer in patients with higher versus lower model-predicted cycle 1 C min , OS and PFS hazard ratios for T-DM1-treated patients in the lowest exposure quartile ( Q 1) versus control were &lt; 1 after adjusting for baseline risk factors (e.g., ECOG status, tumor burden, measurable disease, and number of disease sites). No meaningful exposure–response relationship was observed for any safety endpoints. Conclusion Exposure–response relationships for efficacy were inconsistent across exposure metrics; model-predicted cycle 1 C min showed the strongest exposure–response trend. The Q 1 subgroup based on model-predicted cycle 1 C min had numerically similar or better OS and PFS versus control following covariate adjustment. The approved T-DM1 dose (3.6 mg/kg every 3 weeks) has a positive benefit–risk ratio versus control, even for the T-DM1 Q 1 subgroup.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>29022084</pmid><doi>10.1007/s00280-017-3440-4</doi><tpages>12</tpages></addata></record>
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subjects Antineoplastic Agents, Immunological - therapeutic use
Antineoplastic Combined Chemotherapy Protocols - therapeutic use
Breast cancer
Breast Neoplasms - drug therapy
Breast Neoplasms - pathology
Bridged-Ring Compounds - therapeutic use
Cancer
Cancer Research
Effectiveness
Epidermal growth factor
ErbB-2 protein
Exposure
Female
Hepatotoxicity
Humans
Immunotherapy
Maytansine - analogs & derivatives
Maytansine - therapeutic use
Medicine
Medicine & Public Health
Middle Aged
Monoclonal antibodies
Numerical prediction
Oncology
Original Article
Patients
Pharmacology/Toxicology
Quality
Receptor, ErbB-2 - metabolism
Risk analysis
Risk factors
Risk management
Survival
Targeted cancer therapy
Taxanes
Taxoids - therapeutic use
Thrombocytopenia
Trastuzumab
Trastuzumab - therapeutic use
Trends
title Exposure–response analyses of trastuzumab emtansine in patients with HER2-positive advanced breast cancer previously treated with trastuzumab and a taxane
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