{"id":396362,"date":"2020-12-09T08:42:21","date_gmt":"2020-12-09T13:42:21","guid":{"rendered":"http:\/\/www.marketnewsdesk.com\/?p=396362"},"modified":"2020-12-09T08:42:21","modified_gmt":"2020-12-09T13:42:21","slug":"athenex-presents-updated-phase-3-data-on-survival-and-tolerability-associated-with-oral-paclitaxel-and-encequidar-in-patients-with-metastatic-breast-cancer","status":"publish","type":"post","link":"https:\/\/www.marketnewsdesk.com\/index.php\/athenex-presents-updated-phase-3-data-on-survival-and-tolerability-associated-with-oral-paclitaxel-and-encequidar-in-patients-with-metastatic-breast-cancer\/","title":{"rendered":"Athenex Presents Updated Phase 3 Data on Survival and Tolerability Associated with Oral Paclitaxel and Encequidar in Patients with Metastatic Breast Cancer"},"content":{"rendered":"<div class=\"mw_release\">\n<ul type=\"disc\">\n<li>\n          <em>Data presented at SABCS <\/em><br \/>\n          <em>indicates<\/em><br \/>\n          <em> benefits of oral paclitaxel and encequidar (oral paclitaxel) <\/em><br \/>\n          <em>versus<\/em><br \/>\n          <em> IV<\/em><br \/>\n          <em> paclitaxel (IV<\/em><br \/>\n          <em>P<\/em><br \/>\n          <em>)<\/em><br \/>\n          <em> on<\/em><br \/>\n          <em> Progression-Free Survival (PFS) and <\/em><br \/>\n          <em>on <\/em><br \/>\n          <em>Overall Survival (OS),<\/em><br \/>\n          <em>which <\/em><br \/>\n          <em>suppor<\/em><br \/>\n          <em>ts<\/em><br \/>\n          <em>superiority o<\/em><br \/>\n          <em>n<\/em><br \/>\n          <em>the primary endpoint <\/em><br \/>\n          <em>Overall Response Rate (ORR)<\/em><br \/>\n          <em>.<\/em>\n        <\/li>\n<li>\n          <em>In the intent<\/em><br \/>\n          <em>&#8211;<\/em><br \/>\n          <em>to<\/em><br \/>\n          <em>&#8211;<\/em><br \/>\n          <em>treat (<\/em><br \/>\n          <em>I<\/em><br \/>\n          <em>TT) population, oral paclitaxel showed a benefit on PFS versus IVP<\/em><br \/>\n          <em>, and showed a trend favoring oral paclitaxel on OS versus IVP. Oral paclitaxel demonstrated<\/em><br \/>\n          <em> a median PFS of 8.4 months vs. 7.4 months, hazard ratio (HR) 0.768 (95% CI: 0.584, 1.01), p=0.04<\/em><br \/>\n          <em>6<\/em><br \/>\n          <em>.<\/em><br \/>\n          <em> Oral paclitaxel demonstrated a median OS of 22.7 months vs. 16.5 months, HR 0.794 (95% CI: 0.607, 1.037), p=0.082.<\/em>\n        <\/li>\n<li>\n          <em>In the <\/em><br \/>\n          <em>prespecified <\/em><br \/>\n          <em>modified intent<\/em><br \/>\n          <em>&#8211;<\/em><br \/>\n          <em>to<\/em><br \/>\n          <em>&#8211;<\/em><br \/>\n          <em>treat (mITT) population, oral paclitaxel showed a benefit on both PFS and OS versus IVP. Oral paclitaxel demonstrated a median PFS of <\/em><br \/>\n          <em>8.4<\/em><br \/>\n          <em> months vs. <\/em><br \/>\n          <em>7.4<\/em><br \/>\n          <em> months, HR <\/em><br \/>\n          <em>0.739<\/em><br \/>\n          <em> (95% CI: <\/em><br \/>\n          <em>0.561<\/em><br \/>\n          <em>, <\/em><br \/>\n          <em>0.974<\/em><br \/>\n          <em>), p=<\/em><br \/>\n          <em>0.023<\/em><br \/>\n          <em>, and <\/em><br \/>\n          <em>a median OS of<\/em><br \/>\n          <em> 23.3<\/em><br \/>\n          <em> months vs. <\/em><br \/>\n          <em>16.3<\/em><br \/>\n          <em> months, HR <\/em><br \/>\n          <em>0.735<\/em><br \/>\n          <em> (95% CI: <\/em><br \/>\n          <em>0.556<\/em><br \/>\n          <em>, <\/em><br \/>\n          <em>0.972<\/em><br \/>\n          <em>), p=<\/em><br \/>\n          <em>0.026<\/em><br \/>\n          <em>.<\/em>\n        <\/li>\n<li>\n          <em>Additional data <\/em><br \/>\n          <em>presented <\/em><br \/>\n          <em>highlight<\/em><br \/>\n          <em>a <\/em><br \/>\n          <em>favorable tolerability profile, as measured by <\/em><br \/>\n          <em>continued low incidence of neuropathy <\/em><br \/>\n          <em>as well as <\/em><br \/>\n          <em>manageable<\/em><br \/>\n          <em> gastrointestinal <\/em><br \/>\n          <em>side <\/em><br \/>\n          <em>effects<\/em><br \/>\n          <em>.<\/em>\n        <\/li>\n<\/ul>\n<p align=\"justify\">BUFFALO, N.Y., Dec.  09, 2020  (GLOBE NEWSWIRE) &#8212; Athenex, Inc., (NASDAQ: ATNX), a global biopharmaceutical company dedicated to the discovery, development, and commercialization of novel therapies for the treatment of cancer and related conditions, announced today the presentation of updated Phase 3 PFS and OS data demonstrating clinical benefits in efficacy and tolerability of oral paclitaxel versus IVP in patients with metastatic breast cancer (MBC). The findings further support the superiority of increased ORR observed with oral paclitaxel. These data were presented today during a spotlight poster presentation at the 2020 San Antonio Breast Cancer Symposium (SABCS).<\/p>\n<p align=\"justify\">\u201cHaving previously presented superior efficacy on overall response rate and favorable tolerability versus IV paclitaxel at SABCS 2019, it is gratifying to report that our pivotal Phase 3 trial continues to show sustained efficacy and manageable adverse events with oral paclitaxel and encequidar,\u201d said Dr. Johnson Lau, Chairman and Chief Executive Officer of Athenex. \u201cThe updated Phase 3 PFS and OS data further support the clinical rationale for oral paclitaxel as an efficacious and tolerable treatment option for people living with metastatic breast cancer.\u201d<\/p>\n<p align=\"justify\">The spotlight poster presentation at SABCS featured an update on PFS and OS data from the Phase 3 trial. In the prespecified modified intent-to-treat (mITT) population (n = 360), the median PFS data showed a benefit for oral paclitaxel versus IVP (8.4 vs. 7.4 months, respectively; hazard ratio [HR] = 0.739; 95% confidence interval [CI]: 0.561, 0.974; p = 0.023). Median OS data also showed a benefit for oral paclitaxel versus IVP (23.3 months vs. 16.3 months, respectively; HR = 0.735; 95% CI: 0.556, 0.972; p = 0.026).<\/p>\n<p align=\"justify\">In the intent-to-treat (ITT) population, which included all 402 randomized patients, the median PFS showed a benefit for oral paclitaxel versus IVP (8.4 months vs. 7.4 months, respectively; HR = 0.768; 95% CI: 0.584, 1.01; p = 0.046). The median OS data demonstrated a trend favoring oral paclitaxel versus IVP (22.7 months vs. 16.5 months, respectively; HR = 0.794; 95% CI: 0.607, 1.037; p = 0.082).<\/p>\n<p align=\"justify\">Updated safety analyses of up to 112 weeks continue to demonstrate the reduction in incidence and severity of neuropathy favoring oral paclitaxel versus IVP: all grades of neuropathy were 22% vs. 64%, and grade 3 neuropathy was 2% vs. 15%.<\/p>\n<p align=\"justify\">Also presented were data on the effect of prophylactic treatments on the incidence and severity of gastrointestinal-related adverse events. After approximately 30% of patients were enrolled, the Phase 3 trial protocol was amended to allow patients randomized to the oral paclitaxel arm to receive prophylactic pre-medications for gastrointestinal side effects. Overall gastrointestinal (GI)-related adverse events (AEs) were less frequent in the IV paclitaxel arm. GI-related AEs improved in the oral paclitaxel arm following the amendment, as measured by lower incidences of grade 2 vomiting before and after amendment (24% vs. 7%) and grade 2 diarrhea before and after amendment (27% vs. 16%).<\/p>\n<p align=\"justify\">\u201cThe oral paclitaxel regimen appears to overcome some of the limitations of IV therapy, particularly in terms of reducing the risk of neuropathy,\u201d commented lead investigator Gerardo Antonio Umanzor F\u00fanez, M.D., a medical oncologist at Centro Oncologico Integral, working with DEMEDICA of San Pedro Sula, Honduras. \u201cThe lessened burden of neuropathy, the ability to manage GI side effects with prophylactic treatments, and the convenience of home-based administration, could be transformational in the treatment of metastatic breast cancer, especially in the current environment.\u201d\u00a0\u00a0<\/p>\n<p align=\"justify\">Oral paclitaxel has been granted Priority Review by the U.S. Food and Drug Administration (FDA) for the treatment of metastatic breast cancer with a PDUFA date of February 28, 2021.<\/p>\n<p align=\"justify\">\n        <strong>About the<\/strong><br \/>\n        <strong>Phase 3 <\/strong><br \/>\n        <strong>Oral Paclitaxel and Encequidar <\/strong><br \/>\n        <strong>Clinical Trial<\/strong><br \/>\n        <br \/>The Phase 3 trial randomized 402 patients with any metastatic breast cancer subtypes in a 2:1 ratio to receive either the oral paclitaxel regimen (205 mg\/m<sup>2<\/sup> of oral paclitaxel plus 15 mg of encequidar) for three days a week or the approved IV paclitaxel regimen (175 mg\/m<sup>2<\/sup>) as a three-hour infusion every three weeks. The primary efficacy endpoint was overall response rate (ORR) confirmed at two consecutive timepoints by a blinded, independent radiology review that used RECIST v1.1 criteria to evaluate patients\u2019 tumors for response. The trial was designed to demonstrate superiority of oral paclitaxel over IVP on the primary end point of ORR. Secondary endpoints included progression-free survival (PFS) and overall survival (OS). The trial was not powered to demonstrate superiority of oral paclitaxel versus IVP on the secondary survival endpoints of PFS and OS. These secondary endpoints were not controlled for multiplicity. P-values presented are nominal.<\/p>\n<p align=\"justify\">\n        <strong>About Oral Paclitaxel<\/strong><br \/>\n        <br \/>Athenex\u2019s oral paclitaxel and encequidar (\u201coral paclitaxel\u201d) is the first oral formulation of\u00a0paclitaxel\u00a0in late-stage development for the treatment of metastatic breast cancer (MBC), and is also in earlier stages of development for other malignancies. Encequidar, the cornerstone of Athenex\u2019s Orascovery technology platform, is a highly specific and potent inhibitor of\u00a0the transport protein\u00a0called P-glycoprotein (P-gp) in the gastrointestinal (GI) tract. By localizing P-gp inhibitory activity in the GI tract, encequidar improves the absorption of chemotherapeutic agents while limiting the potential for unnecessary P-gp inhibition at other sites in the body. The potency, selectivity, and low absorption of encequidar enables the oral administration of IV chemotherapies, several of which are under development by Athenex.\u00a0\u00a0<\/p>\n<p align=\"justify\">\n        <strong>About\u00a0Athenex, Inc.<\/strong><br \/>\n        <br \/>Founded in 2003,\u00a0Athenex, Inc.\u00a0is a global clinical stage biopharmaceutical company dedicated to becoming a leader in the discovery, development, and commercialization of next generation drugs for the treatment of cancer.\u00a0Athenex\u00a0is organized around three platforms, including an Oncology Innovation Platform, a Commercial Platform, and a Global Supply Chain Platform. The Company\u2019s current clinical pipeline is derived from four different platform technologies: (1) Orascovery, based on P-glycoprotein inhibitor, (2) Src kinase inhibition, (3) T-cell receptor-engineered T-cells (TCR-T), and (4) Arginine deprivation therapy. Athenex\u2019s employees worldwide are dedicated to improving the lives of cancer patients by creating more active and tolerable treatments. Athenex\u00a0has offices in\u00a0Buffalo\u00a0and\u00a0Clarence, New York;\u00a0Cranford, New Jersey;\u00a0Houston, Texas;\u00a0Chicago, Illinois;\u00a0Hong Kong;\u00a0Taipei,\u00a0Taiwan; multiple locations in\u00a0Chongqing, China;\u00a0Manchester, UK;\u00a0Guatemala City,\u00a0Guatemala\u00a0and\u00a0Buenos Aires,\u00a0Argentina. For more information, please visit\u00a0<a href=\"https:\/\/www.globenewswire.com\/Tracker?data=FGHo8P1UTP7sr9CzQ3jaR7ZJDLmB8q9Aop5OIJ6pwESEcHmkkZ9ZOjw4Mid63SnwDmzaJ-GeFR5nE8PIM98c3Q==\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">www.athenex.com<\/a>.<\/p>\n<p align=\"justify\">\n        <strong>Forward-Looking Statements<\/strong><br \/>\n        <br \/>Except for historical information, all of the statements, expectations, and assumptions contained in this press release are forward-looking statements. These forward-looking statements are typically identified by terms such as \u201canticipate,\u201d \u201cbelieve,\u201d \u201ccontinue,\u201d \u201ccould,\u201d \u201cestimate,\u201d \u201cexpect,\u201d \u201cforesee,\u201d \u201cgoal,\u201d \u201cguidance,\u201d \u201cintend,\u201d \u201clikely,\u201d \u201cmay,\u201d \u201cplan,\u201d \u201cpotential,\u201d \u201cpredict,\u201d \u201cpreliminary,\u201d \u201cprobable,\u201d \u201cproject,\u201d \u201cpromising,\u201d \u201cseek,\u201d \u201cshould,\u201d \u201cwill,\u201d \u201cwould,\u201d and similar expressions. Actual results might differ materially from those explicit or implicit in the forward-looking statements. Important factors that could cause actual results to differ materially include: the development stage of our primary clinical candidates and related risks involved in drug development, clinical trials, regulation, manufacturing and commercialization; our reliance on third parties for success in certain areas of Athenex\u2019s business; our history of operating losses and need to raise additional capital to continue as a going concern; uncertainties around our ability to meet funding conditions under our financing agreements and access to capital thereunder; risks and uncertainties related to the COVID-19 pandemic and its potential impact on our operations, cash flow and financial condition; competition; intellectual property risks; risks relating to doing business internationally and in\u00a0China; the risk of production slowdowns or stoppages or other interruptions at our\u00a0Chongqing\u00a0facilities; and the other risk factors set forth from time to time in our\u00a0SEC\u00a0filings, copies of which are available for free in the Investor Relations section of our website at\u00a0<a href=\"https:\/\/www.globenewswire.com\/Tracker?data=OtYemKZTU-gZAArjKTRqO9WNETPCYwqg1g1lSAlTrlwJN096nzNwNfcCoJ_xKINB-b2OCXHSQpuwKKMf66SKyR-8G5cW1loafQhOVZR86NRATWXrkfZwFqVj2D5p0qwUz7Iek8WYsQTIWdV6ZNZe4JcHNRKoiNrBVxDxoeYfi0XfaCJYDfzILpUCVhb08IwG\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">http:\/\/ir.athenex.com\/phoenix.zhtml?c=254495&amp;p=irol-sec<\/a>\u00a0or upon request from our Investor Relations Department. All information provided in this release is as of the date hereof and we assume no obligation and do not intend to update these forward-looking statements, except as required by law.<\/p>\n<p>\n        <strong>CONTACTS<\/strong>\n      <\/p>\n<p>\n        <u>Investors<\/u>\n      <\/p>\n<p>Steve Rubis<br \/>Athenex, Inc.<br \/>Email:\u00a0<a href=\"https:\/\/www.globenewswire.com\/Tracker?data=eBJdipM3aEdrl1ohiLkBP5vejooftmKMUczQ8oxgX3OLtnyLeHGgTtlR6Xgd6pDWCJ6kA-jwsmJEQ7_oz2COY_yHQQvMAXmQ0Mbdc7y9OKg=\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">stevenrubis@athenex.com<\/a>\u00a0<\/p>\n<p>Daniel Lang, MD<br \/>Athenex, Inc.<br \/>Email:\u00a0<a href=\"https:\/\/www.globenewswire.com\/Tracker?data=aNu2D7U5ENNP9ISSWSNU84P_tqHL6d8xnYyRu3v60_18JvKO3z5rrwZrmAZlCdR7ZXaRtWKFcKmt3jgr7on7tJr1gHZ8mmR5enO-CVMOpwc=\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">danlang@athenex.com<\/a>\u00a0<\/p>\n<p>Tim McCarthy<br \/>LifeSci Advisors, LLC<br \/>Email:\u00a0<a href=\"https:\/\/www.globenewswire.com\/Tracker?data=iKzSmi-hD8Pk43XNfsTVn97HYVTsnAILnAodqZ_004Xpxibv79OzscDjjw8swutQycJDtBlW-0zb_pEMrE5wpMP3ESpn80lLJeVp4g-1t3g=\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">tim@lifesciadvisors.com<\/a>\u00a0<\/p>\n<p>\n        <u>Media<\/u>\n      <\/p>\n<p>Gloria Gasaatura<br \/>LifeSci Communications, LLC<br \/>Email: <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=HSsqPM06rSfKWIUCdVHAL1a2dOWL-PfvUf381N7zhFEl3owAophxWUK1JIs1ottaIFmG-7Pg1nGycDGgNn0bG2u_edbQaUhJXSQ9s9gK1O3Jgi560sf05a7MrmI0PRlo\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">ggasaatura@lifescicomms.com<\/a>\u00a0<\/p>\n<p \/>\n      <img loading=\"lazy\" decoding=\"async\" class=\"__GNW8366DE3E__IMG\" src=\"https:\/\/www.globenewswire.com\/newsroom\/ti?nf=ODA5OTQ3MSMzODYzMTcxIzIwODQ0OTg=\" width=\"1\" height=\"1\" \/><br \/>\n      <br \/>\n      <img loading=\"lazy\" decoding=\"async\" class=\"__GNW8366DE3E__IMG\" src=\"https:\/\/ml.globenewswire.com\/release\/track\/dc902f3d-4f3d-42e2-9d6b-7da80ae9ceaf\" width=\"1\" height=\"1\" \/>\n    <\/div>\n<div class=\"mw_contactinfo\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Data presented at SABCS indicates benefits of oral paclitaxel and encequidar (oral paclitaxel) versus IV paclitaxel (IV P ) on Progression-Free Survival (PFS) and on Overall Survival (OS), which suppor ts superiority o n the primary endpoint Overall Response Rate (ORR) . In the intent &#8211; to &#8211; treat ( I TT) population, oral paclitaxel showed a benefit on PFS versus IVP , and showed a trend favoring oral paclitaxel on OS versus IVP. Oral paclitaxel demonstrated a median PFS of 8.4 months vs. 7.4 months, hazard ratio (HR) 0.768 (95% CI: 0.584, 1.01), p=0.04 6 . Oral paclitaxel demonstrated a median OS of 22.7 months vs. 16.5 months, HR 0.794 (95% CI: 0.607, 1.037), p=0.082. In the prespecified modified &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.marketnewsdesk.com\/index.php\/athenex-presents-updated-phase-3-data-on-survival-and-tolerability-associated-with-oral-paclitaxel-and-encequidar-in-patients-with-metastatic-breast-cancer\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Athenex Presents Updated Phase 3 Data on Survival and Tolerability Associated with Oral Paclitaxel and Encequidar in Patients with Metastatic Breast Cancer&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-396362","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Athenex Presents Updated Phase 3 Data on Survival and Tolerability Associated with Oral Paclitaxel and Encequidar in Patients with Metastatic Breast Cancer - Market Newsdesk<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.marketnewsdesk.com\/index.php\/athenex-presents-updated-phase-3-data-on-survival-and-tolerability-associated-with-oral-paclitaxel-and-encequidar-in-patients-with-metastatic-breast-cancer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Athenex Presents Updated Phase 3 Data on Survival and Tolerability Associated with Oral Paclitaxel and Encequidar in Patients with Metastatic Breast Cancer - Market Newsdesk\" \/>\n<meta property=\"og:description\" content=\"Data presented at SABCS indicates benefits of oral paclitaxel and encequidar (oral paclitaxel) versus IV paclitaxel (IV P ) on Progression-Free Survival (PFS) and on Overall Survival (OS), which suppor ts superiority o n the primary endpoint Overall Response Rate (ORR) . In the intent &#8211; to &#8211; treat ( I TT) population, oral paclitaxel showed a benefit on PFS versus IVP , and showed a trend favoring oral paclitaxel on OS versus IVP. Oral paclitaxel demonstrated a median PFS of 8.4 months vs. 7.4 months, hazard ratio (HR) 0.768 (95% CI: 0.584, 1.01), p=0.04 6 . Oral paclitaxel demonstrated a median OS of 22.7 months vs. 16.5 months, HR 0.794 (95% CI: 0.607, 1.037), p=0.082. 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