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Bambusa Therapeutics Initiates Phase 1 Trial of Novel Bispecific Antibody BBT001 for Atopic Dermatitis

  • Bambusa Therapeutics has dosed the first subject in a Phase 1 trial of BBT001, a novel half-life extended bispecific antibody designed to treat atopic dermatitis through multiple mechanisms of action.

  • The trial will evaluate BBT001 in both healthy volunteers and adults with moderate to severe atopic dermatitis, with interim safety and pharmacokinetic data expected in the second half of 2025.

  • Preclinical data suggests BBT001 could offer superior efficacy and more convenient dosing compared to existing biologics, potentially setting a new standard for atopic dermatitis treatment.

Bambusa Therapeutics has launched its first clinical trial of BBT001, marking a significant step forward in the development of novel treatments for atopic dermatitis. The clinical-stage biotechnology company announced today the initiation of dosing in healthy volunteers for its innovative bispecific antibody designed to target multiple disease pathways.
The Phase 1 trial (NCT06808477) employs a randomized, placebo-controlled design incorporating both single ascending dose (SAD) and multiple ascending dose (MAD) components. The study aims to enroll approximately 98 participants, including healthy volunteers and patients with moderate to severe atopic dermatitis.
"BBT001 represents a potential breakthrough in atopic dermatitis treatment by leveraging innovative antibody engineering to engage multiple, clinically validated, non-overlapping mechanisms of action," stated Shanshan Xu, M.D., Ph.D., Founder and Chief Executive Officer of Bambusa Therapeutics. "Our goal is to deliver faster onset of symptom relief, superior efficacy, and improved dosing convenience that could ultimately redefine the standard of care for AD patients."

Disease Impact and Unmet Needs

Atopic dermatitis affects approximately 16.5 million adults in the United States alone. The chronic inflammatory skin condition manifests as intense itching, dry skin, and recurrent eczematous lesions, significantly impacting patients' quality of life. Despite recent advances in biological therapies, many patients continue to experience inadequate disease control, highlighting the need for more effective treatment options.

Novel Therapeutic Approach

BBT001 distinguishes itself through its innovative design as a half-life extended bispecific antibody. Preclinical studies have demonstrated promising results, suggesting potential advantages over currently approved biologics in terms of both efficacy and dosing convenience. The compound's multi-targeting mechanism of action represents a novel approach to addressing the complex pathophysiology of atopic dermatitis.

Trial Design and Timeline

The Phase 1 study will evaluate multiple aspects of BBT001, including:
  • Safety and tolerability profiles
  • Pharmacokinetic characteristics
  • Immunogenicity assessment
  • Pharmacodynamic responses
  • Preliminary clinical activity
Interim safety and pharmacokinetic data from the trial are expected to be available in the second half of 2025, providing initial insights into the drug's potential clinical utility.

Broader Pipeline Development

BBT001 leads Bambusa's innovative pipeline, which includes several other promising candidates. The company is simultaneously developing BBT002, a bispecific antibody designed as a "platform in a molecule" with potential applications across respiratory, dermatology, and gastroenterology indications. Additional pipeline candidates BBT003 and BBT004 are being developed to address inflammatory bowel disease and rheumatological conditions, respectively.
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