{"id":396383,"date":"2020-12-09T09:03:23","date_gmt":"2020-12-09T14:03:23","guid":{"rendered":"http:\/\/www.marketnewsdesk.com\/?p=396383"},"modified":"2020-12-09T09:03:23","modified_gmt":"2020-12-09T14:03:23","slug":"amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020","status":"publish","type":"post","link":"https:\/\/www.marketnewsdesk.com\/index.php\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\/","title":{"rendered":"Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020"},"content":{"rendered":"<div class=\"mw_release\">\n<p align=\"center\">\n        <em>\u2013<\/em><br \/>\n        <em> Data demonstrate potential of <\/em><br \/>\n        <em>Amunix\u2019s<\/em><br \/>\n        <em> XPAT<\/em><br \/>\n        <em> (<\/em><br \/>\n        <strong><br \/>\n          <em>X<\/em><br \/>\n        <\/strong><br \/>\n        <em>TENylated<\/em><br \/>\n        <strong><br \/>\n          <em>P<\/em><br \/>\n        <\/strong><br \/>\n        <em>rotease<\/em><br \/>\n        <em>&#8211;<\/em><br \/>\n        <strong><br \/>\n          <em>A<\/em><br \/>\n        <\/strong><br \/>\n        <em>ctivated <\/em><br \/>\n        <strong><br \/>\n          <em>T<\/em><br \/>\n        <\/strong><br \/>\n        <em> cell engager)<\/em><br \/>\n        <em> platform to <\/em><br \/>\n        <em>mitigate<\/em><br \/>\n        <em> on-target, off-tumor toxicity that has hindered <\/em><br \/>\n        <em>success <\/em><br \/>\n        <em>of T cell engagers <\/em><br \/>\n        <em>in <\/em><br \/>\n        <em>treat<\/em><br \/>\n        <em>ing<\/em><br \/>\n        <em> solid tumors \u2013<\/em><br \/>\n        \n      <\/p>\n<p align=\"center\">\n        <em>\u2013<\/em><br \/>\n        <em>Lead program AMX-818, an <\/em><br \/>\n        <em>XPAT<\/em><br \/>\n        <em> prodrug<\/em><br \/>\n        <em> targeting HER2, <\/em><br \/>\n        <em>demonstrates potent efficacy with ~500-fold <\/em><br \/>\n        <em>improved <\/em><br \/>\n        <em>safety <\/em><br \/>\n        <em>relative to unmasked<\/em><br \/>\n        <em>, active<\/em><br \/>\n        <em> form<\/em><br \/>\n        <em>,<\/em><br \/>\n        <em>and no<\/em><br \/>\n        <em> evidence of<\/em><br \/>\n        <em> CRS <\/em><br \/>\n        <em>\u2013<\/em>\n      <\/p>\n<p align=\"center\">\n        <em> \u2013<\/em><br \/>\n        <em>AMX-818 is effective<\/em><br \/>\n        <em>in <\/em><br \/>\n        <em>both HER2-high and HER-low <\/em><br \/>\n        <em>tumor<\/em><br \/>\n        <em> models<\/em><br \/>\n        <em>, <\/em><br \/>\n        <em>and continues progress toward clinic<\/em> \u2013<\/p>\n<p>SOUTH SAN FRANCISCO, Calif., Dec.  09, 2020  (GLOBE NEWSWIRE) &#8212; Amunix Pharmaceuticals, Inc. (\u201cAmunix\u201d), a biopharmaceutical company developing prodrugs of potent immune-activating biotherapeutics for the treatment of patients with solid tumors, today shared new data on AMX-818 (HER2-XPAT), the company\u2019s lead clinical candidate T cell engager which targets HER2. Data was presented at the 2020 San Antonio Breast Cancer Symposium.<\/p>\n<p>\u201cWe continue to be excited by progress of AMX-818 and its strong efficacy and safety data package,\u201d said Angie You, Ph.D., CEO of Amunix. \u201cNew <em>in vivo<\/em> results demonstrating AMX-818 efficacy in a HER2-low tumor model support the potential to treat the significant population of patients with HER2-low and \u2013medium tumors who are not currently served by any HER2-targeting agents. In addition, because our universal masking technology is plug and play, we have been able to rapidly drive progress on two additional XPAT programs targeting PSMA and TROP2.\u201d<\/p>\n<p>Amunix presented a poster at SABCS, titled \u201cHER2-XPAT, A Novel Protease-Activatable Prodrug T Cell Engager (TCE), Engineered to Address <em>On<\/em>-Target, <em>Off<\/em>-Tumor Toxicity and Provide Large Predicted Safety Margins in Non-Human Primates\u201d. The poster shows that Amunix\u2019s XPAT technology can improve the toxicity profile of T cell engagers while maintaining their potency against solid tumors. <em>In vitro<\/em>, protease-activated HER2-XPAT showed potent cytotoxic activity against tumor cell lines with EC50s in the single-digit pM range, while masking reduced target-directed T cell cytotoxicity and T cell activation by &gt;10,000-fold. In established xenograft models, HER2-XPAT induced complete tumor regressions with efficacious doses within an order of magnitude of the unmasked (active) T cell engager. The ability to shrink large tumors was evident even after a single dose of HER2-XPAT, and the drug remained stable in circulation of tumor-bearing mice. Importantly, AMX-818 was also able to induce complete responses in xenograft tumors expressing low levels of HER2. This suggests the drug could have utility beyond HER2-high expressing cancer patients, addressing a large patient population that is not served by current HER2-targeting agents.<\/p>\n<p>Safety data from cynomolgus monkeys demonstrate that the masked XPAT prodrug has a markedly lower risk of CRS and enables a significant increase in maximum tolerated exposures relative to the unmasked, active form. In contrast to traditional unmasked T cell engagers, which have MTDs in the \u00b5g\/kg range, HER2-XPAT can be safely dosed up to 42 mg\/kg in cynos, representing a ~500-fold increase in tolerated exposures from masking. Combined with the potency of XPATs in xenograft models, these data suggest a favorable therapeutic index for AMX-818.<\/p>\n<p>\n        <strong><br \/>\n          <u>Poster Presentation Details<\/u><br \/>\n        <\/strong><br \/>\n        <br \/>\n        <strong>Title:<\/strong> HER2-XPAT, A Novel Protease-Activatable Prodrug T Cell Engager (TCE), Engineered to Address On-Target, Off-Tumor Toxicity and Provide Large Predicted Safety Margins in Non-Human Primates<br \/><strong>Abstract Number:<\/strong> PS17-11<br \/><strong>Session:<\/strong> Virtual Poster Hall <br \/><strong>Date:<\/strong> Available for Viewing Starting Dec 9<\/p>\n<p>Copies of the posters are available <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=BROiATWUF8h3HAio_kwyN8pOcg_zL5dDSKztA5OxpPkc4gAylPotkVXB7xL3T5n7BFKpovh8eP4Izsu3uvg5KkbH3MKdhF2ksMEFQPDaQuE=\" rel=\"nofollow noopener noreferrer\" target=\"_blank\"><u>here<\/u><\/a>.<\/p>\n<p>\n        <strong>About Amunix Pharmaceuticals<\/strong>\u00a0<\/p>\n<p>Amunix Pharmaceuticals, based in South San Francisco, CA, is focused on developing prodrugs to bring the promise of potent immune-activating biotherapeutics to patients with solid tumor cancers. The company is leveraging its proprietary T cell engager (XPAT) and cytokine (XPAC) platforms to advance a pipeline of novel prodrugs that are preferentially activated in the tumor microenvironment. Both platforms utilize Amunix\u2019s prodrug technology that has been clinically validated to extend drug half-life with limited immunogenicity. Amunix is advancing its lead development candidate, AMX-818, an XPAT T cell engager targeting HER2+ solid tumors, toward the clinic, and has several earlier programs underway, including programs targeting PSMA and TROP2. Amunix is also working on their first protease-activated masked cytokine program, IL12-XPAC, which is in discovery.<\/p>\n<p>For additional information about the company, please visit <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=GJ93kTmhFSyA7w4giAR43ubMcnLP0G7qmvyHvy_uuneRgm_CY6QfpOT3406m_qJCsvUcN5Ekpkb-sScRrhBY7Q==\" rel=\"nofollow noopener noreferrer\" target=\"_blank\"><u>www.amunix.com<\/u><\/a>.<\/p>\n<p>\n        <strong>Contacts<\/strong>\n      <\/p>\n<p>\n        <strong>Company Contact:<\/strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n<p>Zaneta Odrowaz\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>Director, Corporate Development\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/><a href=\"https:\/\/www.globenewswire.com\/Tracker?data=PbDlQ3zDie05Wp9lYjovFCu6Y5afOoYInR6qDZ9Y0obmFgelnOmSZ4yLrfxhFluiqdF0apiPyd8VRvgR1zdrgw==\" rel=\"nofollow noopener noreferrer\" target=\"_blank\"><u>BD@amunix.com<\/u><\/a><\/p>\n<p>\u00a0<\/p>\n<p>      <img loading=\"lazy\" decoding=\"async\" class=\"__GNW8366DE3E__IMG\" src=\"https:\/\/www.globenewswire.com\/newsroom\/ti?nf=ODA5OTA4OCMzODU3NjY4IzIwODgyODQ=\" width=\"1\" height=\"1\" \/><br \/>\n      <br \/>\n      <img loading=\"lazy\" decoding=\"async\" class=\"__GNW8366DE3E__IMG\" src=\"https:\/\/ml.globenewswire.com\/release\/track\/02931ca9-8d02-4700-98e9-55b1dbe742d1\" width=\"1\" height=\"1\" \/>\n    <\/div>\n<div class=\"mw_contactinfo\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u2013 Data demonstrate potential of Amunix\u2019s XPAT ( X TENylated P rotease &#8211; A ctivated T cell engager) platform to mitigate on-target, off-tumor toxicity that has hindered success of T cell engagers in treat ing solid tumors \u2013 \u2013 Lead program AMX-818, an XPAT prodrug targeting HER2, demonstrates potent efficacy with ~500-fold improved safety relative to unmasked , active form , and no evidence of CRS \u2013 \u2013 AMX-818 is effective in both HER2-high and HER-low tumor models , and continues progress toward clinic \u2013 SOUTH SAN FRANCISCO, Calif., Dec. 09, 2020 (GLOBE NEWSWIRE) &#8212; Amunix Pharmaceuticals, Inc. (\u201cAmunix\u201d), a biopharmaceutical company developing prodrugs of potent immune-activating biotherapeutics for the treatment of patients with solid tumors, today shared new data &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.marketnewsdesk.com\/index.php\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020&#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-396383","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>Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020 - 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\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020 - Market Newsdesk\" \/>\n<meta property=\"og:description\" content=\"\u2013 Data demonstrate potential of Amunix\u2019s XPAT ( X TENylated P rotease &#8211; A ctivated T cell engager) platform to mitigate on-target, off-tumor toxicity that has hindered success of T cell engagers in treat ing solid tumors \u2013 \u2013 Lead program AMX-818, an XPAT prodrug targeting HER2, demonstrates potent efficacy with ~500-fold improved safety relative to unmasked , active form , and no evidence of CRS \u2013 \u2013 AMX-818 is effective in both HER2-high and HER-low tumor models , and continues progress toward clinic \u2013 SOUTH SAN FRANCISCO, Calif., Dec. 09, 2020 (GLOBE NEWSWIRE) &#8212; Amunix Pharmaceuticals, Inc. (\u201cAmunix\u201d), a biopharmaceutical company developing prodrugs of potent immune-activating biotherapeutics for the treatment of patients with solid tumors, today shared new data &hellip; Continue reading &quot;Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.marketnewsdesk.com\/index.php\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\/\" \/>\n<meta property=\"og:site_name\" content=\"Market Newsdesk\" \/>\n<meta property=\"article:published_time\" content=\"2020-12-09T14:03:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.globenewswire.com\/newsroom\/ti?nf=ODA5OTA4OCMzODU3NjY4IzIwODgyODQ=\" \/>\n<meta name=\"author\" content=\"Newsdesk\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Newsdesk\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\\\/\"},\"author\":{\"name\":\"Newsdesk\",\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/#\\\/schema\\\/person\\\/482f27a394d4fda80ecb5499e519d979\"},\"headline\":\"Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020\",\"datePublished\":\"2020-12-09T14:03:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\\\/\"},\"wordCount\":717,\"image\":{\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.globenewswire.com\\\/newsroom\\\/ti?nf=ODA5OTA4OCMzODU3NjY4IzIwODgyODQ=\",\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\\\/\",\"url\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\\\/\",\"name\":\"Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020 - 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Market Newsdesk","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.marketnewsdesk.com\/index.php\/amunix-presents-preclinical-data-on-amx-818-a-protease-activated-her2-targeted-t-cell-engager-prodrug-at-sabcs-2020\/","og_locale":"en_US","og_type":"article","og_title":"Amunix Presents Preclinical Data on AMX-818, a Protease-Activated HER2-Targeted T Cell Engager Prodrug, at SABCS 2020 - Market Newsdesk","og_description":"\u2013 Data demonstrate potential of Amunix\u2019s XPAT ( X TENylated P rotease &#8211; A ctivated T cell engager) platform to mitigate on-target, off-tumor toxicity that has hindered success of T cell engagers in treat ing solid tumors \u2013 \u2013 Lead program AMX-818, an XPAT prodrug targeting HER2, demonstrates potent efficacy with ~500-fold improved safety relative to unmasked , active form , and no evidence of CRS \u2013 \u2013 AMX-818 is effective in both HER2-high and HER-low tumor models , and continues progress toward clinic \u2013 SOUTH SAN FRANCISCO, Calif., Dec. 09, 2020 (GLOBE NEWSWIRE) &#8212; Amunix Pharmaceuticals, Inc. 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