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As reported by\u00a0Dermatology Times<\/em>, AbbVie and Allergan Aesthetics have announced that the U.S. Food and Drug Administration (FDA) has issued a Complete Response Letter (CRL) regarding the Biologics License Application for TrenibotulinumtoxinE (TrenibotE).<\/p>\n The investigational botulinum neurotoxin serotype E is currently under review for the treatment of moderate to severe glabellar lines.While the CRL delays potential approval, the company emphasized that the agency\u2019s feedback was limited to manufacturing-related issues and did not cite concerns regarding safety or efficacy, nor did it request additional clinical trials.<\/p>\n<\/div>\n \u201cWe strongly believe trenibotulinumtoxinE is an important innovation in botulinum toxin science, with the potential to expand options for patients interested in facial aesthetics,” said Roopal Thakkar, MD, executive vice president of research and development and chief scientific officer at AbbVie. “Though disappointed, we remain confident in the strength and integrity of our application, and we are well positioned to respond to the agency’s feedback promptly to support completion of the review.\u201d<\/p>\n The regulatory update is notable given the interest surrounding TrenibotE as a potential first-in-class neurotoxin distinguished by both rapid onset and short duration of action\u2014features that could offer a differentiated option within the evolving facial aesthetics landscape. According to AbbVie, the company expects to respond to the FDA\u2019s manufacturing-related comments in the coming months and remains confident in the strength of its submission. Regulatory reviews for TrenibotE in other countries are ongoing and progressing as expected.<\/p>\n The company submitted a Biologics License Application (BLA) to the FDA in April 2025.2\u00a0The submission was backed by a robust clinical development program involving more than 2,100 patients and included data from 2 pivotal phase 3 trials,\u00a0M21-500 and M21-508, as well as a long-term, open-label safety study, M21-509.<\/p>\n TrenibotE has attracted attention for its distinct pharmacologic profile. As a botulinum toxin serotype E, it differs from currently marketed serotype A neurotoxins in both onset and duration. The clinical data suggests treatment effects may begin as early as eight hours after administration and last approximately\u00a0two to three weeks. This contrasts with currently available neurotoxins, which typically have a slower onset and longer duration.<\/p>\n TrenibotE may be especially well suited for toxin-na\u00efve or hesitant patients who are unsure about committing to longer-lasting neuromodulation. Its \u201ctry-before-you-buy\u201d nature may help overcome aesthetic anxiety regarding appearance changes or treatment value, potentially expanding the patient base for neurotoxin therapies.<\/p>\n “Are we going to have ones that maybe last longer? Are we going to have different products in the market? Will that move the price? Will this become just something that everyone does, kind of like getting your hair done? It\u2019s just really an exciting field to be in,\u201d Rosalyn George, MD, founder of Wilmington Dermatology Center in Wilmington, North Carolina, and investigator in several TrenibotE studies,\u00a0said in a recent interview\u00a0with Dermatology Times<\/em>.<\/p>\n Further data was shared at the recent\u00a02026 American Academy of Dermatology (AAD) Annual Meeting. Clinical\u00a0improvements were observed as early as 48 hours after administration, with a substantial proportion of patients achieving \u22651- and \u22652-grade improvements in FWS scores, even with repeated doses over time. Safety outcomes were favorable and remained consistent across treatment cycles. The most commonly reported treatment-related adverse events included headache, injection site pain, and bruising.<\/p>\n \u201cRobust research has been done in the trenibtoulunumE program, including this latest open-label phase 3 study using the first Type E botulinum toxin.\u00a0Safety and efficacy were clearly demonstrated after three sequential doses of Trenibotulinum toxin.\u00a0Trenibotulinum toxin\u2019s unique profile of early onset as fast as eight hours with duration of only two to three weeks may give those patients considering botulinum toxin treatment a trial option,\u201d trial investigator and director of Skin Associates of South Florida and the Skin Research Institute, Joely Kaufman, MD,\u00a0told\u00a0Dermatology Times<\/em>.<\/p>\n<\/div>\n As reported by\u00a0Dermatology Times, AbbVie and Allergan Aesthetics have announced that the U.S. Food and Drug Administration (FDA) has issued a Complete Response Letter (CRL) regarding the Biologics License Application for TrenibotulinumtoxinE (TrenibotE). The investigational botulinum neurotoxin serotype E is currently under review for the treatment of moderate to severe glabellar lines.While the CRL delays […]<\/p>\n","protected":false},"author":1,"featured_media":89150,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_daextam_enable_autolinks":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[],"class_list":["post-89149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-beauty"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/diyhaven858.wasmer.app\/wp-content\/uploads\/2026\/05\/d786658f23a60b9710f86e455be3ec278eb5143f-1000x667.jpg","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/posts\/89149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/comments?post=89149"}],"version-history":[{"count":0,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/posts\/89149\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/media\/89150"}],"wp:attachment":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/media?parent=89149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/categories?post=89149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/tags?post=89149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}A Differentiated Profile: Rapid Onset and Short Duration<\/h2>\n
Latest Data from AAD 2026<\/h2>\n
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<><\/p>\n","protected":false},"excerpt":{"rendered":"