{"markup":"\u003C?xml version=\u00221.0\u0022 encoding=\u0022UTF-8\u0022 ?\u003E\n    \u003Chtml version=\u0022HTML+RDFa+MathML 1.1\u0022\n    xmlns:content=\u0022http:\/\/purl.org\/rss\/1.0\/modules\/content\/\u0022\n    xmlns:dc=\u0022http:\/\/purl.org\/dc\/terms\/\u0022\n    xmlns:foaf=\u0022http:\/\/xmlns.com\/foaf\/0.1\/\u0022\n    xmlns:og=\u0022http:\/\/ogp.me\/ns#\u0022\n    xmlns:rdfs=\u0022http:\/\/www.w3.org\/2000\/01\/rdf-schema#\u0022\n    xmlns:sioc=\u0022http:\/\/rdfs.org\/sioc\/ns#\u0022\n    xmlns:sioct=\u0022http:\/\/rdfs.org\/sioc\/types#\u0022\n    xmlns:skos=\u0022http:\/\/www.w3.org\/2004\/02\/skos\/core#\u0022\n    xmlns:xsd=\u0022http:\/\/www.w3.org\/2001\/XMLSchema#\u0022\n    xmlns:mml=\u0022http:\/\/www.w3.org\/1998\/Math\/MathML\u0022\u003E\n  \u003Chead\u003E\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/sites\/default\/files\/js\/js_itu2PgFdrjV-docKmLK8Jn5oXe_05RgvQh73eOhI_mE.js\u0022\u003E\u003C\/script\u003E\n\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/mdc.sagepub.com\/sites\/all\/modules\/highwire\/highwire\/plugins\/highwire_markup_process\/js\/highwire_at_symbol.js?nzm1wd\u0022\u003E\u003C\/script\u003E\n\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/mdc.sagepub.com\/sites\/all\/modules\/highwire\/highwire\/plugins\/highwire_markup_process\/js\/highwire_article_reference_popup.js?nzm1wd\u0022\u003E\u003C\/script\u003E\n\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/sites\/default\/files\/js\/js_I8yX6RYPZb7AtMcDUA3QKDZqVkvEn35ED11_1i7vVpc.js\u0022\u003E\u003C\/script\u003E\n\u003Cscript type=\u0022text\/javascript\u0022\u003E\n\u003C!--\/\/--\u003E\u003C![CDATA[\/\/\u003E\u003C!--\n(function(i,s,o,g,r,a,m){i[\u0022GoogleAnalyticsObject\u0022]=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,\u0022script\u0022,\u0022\/\/www.google-analytics.com\/analytics.js\u0022,\u0022ga\u0022);ga(\u0022create\u0022, \u0022UA-15605596-27\u0022, {\u0022cookieDomain\u0022:\u0022auto\u0022});ga(\u0022set\u0022, \u0022page\u0022, location.pathname + location.search + location.hash);ga(\u0022send\u0022, \u0022pageview\u0022);ga(\u0027create\u0027, \u0027UA-189672-26\u0027, \u0027auto\u0027, {\u0027name\u0027: \u0027hwTracker\u0027});\r\nga(\u0027hwTracker.send\u0027, \u0027pageview\u0027);\n\/\/--\u003E\u003C!]]\u003E\n\u003C\/script\u003E\n\u003Cscript type=\u0022text\/javascript\u0022\u003E\n\u003C!--\/\/--\u003E\u003C![CDATA[\/\/\u003E\u003C!--\njQuery.extend(Drupal.settings, {\u0022basePath\u0022:\u0022\\\/\u0022,\u0022pathPrefix\u0022:\u0022\u0022,\u0022highwire\u0022:{\u0022markup\u0022:[{\u0022requested\u0022:\u0022full-text\u0022,\u0022variant\u0022:\u0022full-text\u0022,\u0022view\u0022:\u0022full\u0022,\u0022pisa\u0022:\u0022spmdc;14\\\/36\\\/16\u0022},{\u0022requested\u0022:\u0022long\u0022,\u0022variant\u0022:\u0022full-text\u0022,\u0022view\u0022:\u0022full\u0022,\u0022pisa\u0022:\u0022spmdc;14\\\/36\\\/16\u0022}],\u0022ac\u0022:{\u0022spmdc;14\\\/36\\\/16\u0022:{\u0022access\u0022:{\u0022reprint\u0022:true,\u0022full\u0022:true},\u0022pisa_id\u0022:\u0022spmdc;14\\\/36\\\/16\u0022,\u0022atom_uri\u0022:\u0022\u0022,\u0022jcode\u0022:\u0022spmdc\u0022}}},\u0022googleanalytics\u0022:{\u0022trackOutbound\u0022:1,\u0022trackMailto\u0022:1,\u0022trackDownload\u0022:1,\u0022trackDownloadExtensions\u0022:\u00227z|aac|arc|arj|asf|asx|avi|bin|csv|doc(x|m)?|dot(x|m)?|exe|flv|gif|gz|gzip|hqx|jar|jpe?g|js|mp(2|3|4|e?g)|mov(ie)?|msi|msp|pdf|phps|png|ppt(x|m)?|pot(x|m)?|pps(x|m)?|ppam|sld(x|m)?|thmx|qtm?|ra(m|r)?|sea|sit|tar|tgz|torrent|txt|wav|wma|wmv|wpd|xls(x|m|b)?|xlt(x|m)|xlam|xml|z|zip\u0022,\u0022trackUrlFragments\u0022:1},\u0022ajaxPageState\u0022:{\u0022js\u0022:{\u0022sites\\\/all\\\/libraries\\\/cluetip\\\/jquery.cluetip.js\u0022:1,\u0022sites\\\/all\\\/libraries\\\/cluetip\\\/lib\\\/jquery.hoverIntent.js\u0022:1,\u0022sites\\\/all\\\/libraries\\\/cluetip\\\/lib\\\/jquery.bgiframe.min.js\u0022:1,\u0022sites\\\/all\\\/modules\\\/highwire\\\/highwire\\\/plugins\\\/highwire_markup_process\\\/js\\\/highwire_at_symbol.js\u0022:1,\u0022sites\\\/all\\\/modules\\\/highwire\\\/highwire\\\/plugins\\\/highwire_markup_process\\\/js\\\/highwire_article_reference_popup.js\u0022:1,\u0022sites\\\/all\\\/modules\\\/contrib\\\/google_analytics\\\/googleanalytics.js\u0022:1,\u00220\u0022:1}}});\n\/\/--\u003E\u003C!]]\u003E\n\u003C\/script\u003E\n\u003Clink type=\u0022text\/css\u0022 rel=\u0022stylesheet\u0022 href=\u0022\/\/d282kpwvnogo5m.cloudfront.net\/sites\/default\/files\/cdn\/css\/http\/css_Xg7z6oCTVgud_Q0huYz9x9iiD5H_2YPSJ5z2ZViSWdY.css\u0022 media=\u0022all\u0022 \/\u003E\n\u003Clink rel=\u0027stylesheet\u0027 type=\u0027text\/css\u0027 href=\u0027\/sites\/all\/modules\/contrib\/panels\/plugins\/layouts\/onecol\/onecol.css\u0027 \/\u003E\u003C\/head\u003E\u003Cbody\u003E\u003Cdiv class=\u0022panels-ajax-tab-panel panels-ajax-tab-panel-sageoa-tab-art\u0022\u003E\u003Cdiv class=\u0022panel-display panel-1col clearfix\u0022 \u003E\n  \u003Cdiv class=\u0022panel-panel panel-col\u0022\u003E\n    \u003Cdiv\u003E\u003Cdiv class=\u0022panel-pane pane-highwire-markup\u0022 \u003E\n  \n      \n  \n  \u003Cdiv class=\u0022pane-content\u0022\u003E\n    \u003Cdiv class=\u0022highwire-markup\u0022\u003E\u003Cdiv xmlns=\u0022http:\/\/www.w3.org\/1999\/xhtml\u0022 id=\u0022content-block-markup\u0022 xmlns:xhtml=\u0022http:\/\/www.w3.org\/1999\/xhtml\u0022\u003E\u003Cdiv class=\u0022article fulltext-view \u0022\u003E\u003Cspan class=\u0022highwire-journal-article-marker-start\u0022\u003E\u003C\/span\u003E\u003Cdiv class=\u0022section abstract\u0022 id=\u0022abstract-1\u0022\u003E\u003Ch2\u003ESummary\u003C\/h2\u003E\n            \u003Cp id=\u0022p-1\u0022\u003EAbiraterone acetate as therapy for chemotherapy-na\u00efve metastatic castration-resistant prostate cancer (mCRPC) improved overall survival (OS) compared with placebo in the final OS analysis of the phase 3 COU-AA-302 clinical trial. This article discusses data from more than 4 years of follow-up from the international, randomized, double-blind, placebo-controlled COU-AA-302. Abiraterone is an orally available inhibitor of the CYP17 enzyme complex, a key regulator of androgen synthesis.\u003C\/p\u003E\n         \u003C\/div\u003E\u003Cul class=\u0022kwd-group\u0022\u003E\u003Cli class=\u0022kwd\u0022\u003EOncology Clinical Trials\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003EReproductive Cancers\u003C\/li\u003E\u003C\/ul\u003E\u003Cul class=\u0022kwd-group clinical-trial\u0022\u003E\u003Cli class=\u0022kwd\u0022\u003EOncology Clinical Trials\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003EOncology\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003EReproductive Cancers\u003C\/li\u003E\u003C\/ul\u003E\u003Cp id=\u0022p-2\u0022\u003EAbiraterone acetate as therapy for chemotherapy-na\u00efve metastatic castration-resistant prostate cancer (mCRPC) improved overall survival (OS) compared with placebo in the final OS analysis of the phase 3 COU-AA-302 clinical trial.\u003C\/p\u003E\u003Cp id=\u0022p-3\u0022\u003ECharles J. Ryan, MD, University of California, San Francisco, San Francisco, California, USA, presented data from more than 4 years of follow-up from the international, randomized, double-blind, placebo-controlled COU-AA-302. Abiraterone is an orally available inhibitor of the CYP17 enzyme complex, a key regulator of androgen synthesis.\u003C\/p\u003E\u003Cp id=\u0022p-4\u0022\u003EEligible patients for the trial were required to have mCRPC and to be free of disease-related symptoms that would lead to a requirement for opiate analgesic use. The study included 1088 men with mCRPC who were randomized in a 1:1 fashion to receive abiraterone acetate 1000 mg QD with concurrent prednisone 5 mg BID, or placebo plus prednisone 5 mg BID. The co-primary end points were radiographic progression-free survival (rPFS) and OS.\u003C\/p\u003E\u003Cp id=\u0022p-5\u0022\u003EThe study was unblinded on the recommendation of the Independent Data Safety Monitoring Committee after the second interim analysis based on a significant difference in rPFS as well as an emerging trend for OS in favor of abiraterone. After unblinding, the study was not discontinued. A subsequent protocol amendment allowed patients in the placebo arm to receive abiraterone. The current analysis incorporated survival and other data after the observation of 741 deaths.\u003C\/p\u003E\u003Cp id=\u0022p-6\u0022\u003ETreatment arms were evenly matched with respect to common clinical and prognostic variables. The median PSA level was approximately 40 ng\/mL in both arms. Approximately half of the patients enrolled had 10 or more bone metastases.\u003C\/p\u003E\u003Cp id=\u0022p-7\u0022\u003EEighty percent of patients in the placebo arm and 67% in the abiraterone arm received subsequent therapy for mCRPC prior to unblinding of the study. The most common subsequent therapy was docetaxel (about 60% in each arm).\u003C\/p\u003E\u003Cp id=\u0022p-8\u0022\u003EThree interim analyses were conducted. As assessed by investigator review, abiraterone doubled the time to rPFS from 8.2 to 16.5 months (HR, 0.52; \u003Cem\u003EP\u003C\/em\u003E \u0026lt; .0001) at the time of the third interim analysis [Rathkopf DE et al. \u003Cem\u003EEur Urol\u003C\/em\u003E. 2014].\u003C\/p\u003E\u003Cp id=\u0022p-9\u0022\u003EThe final analysis consisted of data from a median follow-up of 49.2 months. At this time, 92% of patients in the abiraterone arm and 100% in the placebo arm had discontinued therapy, most often for radiographic progression. Median OS was 34.7 months in the abiraterone arm and 30.3 months in the placebo arm, corresponding to a 19% relative reduction in the risk of death (HR, 0.81; \u003Cem\u003EP\u003C\/em\u003E = .0033). The treatment effect of abiraterone was more pronounced when adjusting for the 44% of patients receiving prednisone who subsequently received abiraterone (HR, 0.74). More than one-fourth of patients randomized into the abiraterone arm have survived for 48 months or longer, noted Dr Ryan.\u003C\/p\u003E\u003Cp id=\u0022p-10\u0022\u003EThe final analysis also demonstrated a significant improvement in median time to opiate use for cancer-related pain when comparing abiraterone versus placebo (median, 33.4 vs 23.4 months, respectively; HR, 0.72; \u003Cem\u003EP\u003C\/em\u003E \u0026lt; .00001). With 2 additional years of follow-up since the previous clinical cutoff, the safety profile of abiraterone remained unchanged. No new safety signals emerged despite the longer duration of therapy and follow-up compared with prior analyses.\u003C\/p\u003E\u003Cul class=\u0022copyright-statement\u0022\u003E\u003Cli class=\u0022fn\u0022 id=\u0022copyright-statement-1\u0022\u003E\u00a9 2014 MD Conference Express\u00ae\u003C\/li\u003E\u003C\/ul\u003E\u003Cspan class=\u0022highwire-journal-article-marker-end\u0022\u003E\u003C\/span\u003E\u003C\/div\u003E\u003Cspan id=\u0022related-urls\u0022\u003E\u003C\/span\u003E\u003C\/div\u003E\u003Ca href=\u0022http:\/\/mdc.sagepub.com\/content\/14\/36\/16.abstract\u0022 class=\u0022hw-link hw-link-article-abstract\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EView Summary\u003C\/a\u003E\u003C\/div\u003E  \u003C\/div\u003E\n\n  \n  \u003C\/div\u003E\n\u003C\/div\u003E\n  \u003C\/div\u003E\n\u003C\/div\u003E\n\u003C\/div\u003E\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/mdc.sagepub.com\/sites\/all\/modules\/highwire\/highwire\/plugins\/highwire_markup_process\/js\/highwire_openurl.js?nzm1wd\u0022\u003E\u003C\/script\u003E\n\u003C\/body\u003E\u003C\/html\u003E"}