Pharma BD Deal Intelligence

Johnson & Johnson / Proteologix Inc.

2024 · Acquisition/Merger · $850M · Complete

A $850M acquisition where Johnson & Johnson bought Proteologix outright for drug development, though the deal remains thinly documented—no disclosed assets, molecules, or indications accompany the price tag.

CALLED IT — OFF BY 22
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The coverage arc

May 16, 2024 Johnson & Johnson Bullish

Johnson & Johnson to acquire Proteologix for $850 million to lead in atopic dermatitis treatment with bispecific antibody portfolio

May 16, 2024 PR Newswire Neutral

Proteologix Inc to be acquired by Johnson & Johnson for $850 million in cash for bispecific antibody programs in immune-mediated diseases

Apr 24, 2026 BioPharm International Bullish

Johnson & Johnson boosts bispecifics portfolio with Proteologix acquisition gaining ten bispecific antibody programs across multiple diseases

Source summaries from our enrichment pipeline; follow links for originals.

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J&J acquired Proteologix for $850M for drug development.

Key facts

Disease & market context

Atopic Dermatitis

200K US cases/yr · $15.0B Global AD Market (2025E)

Disease Overview

PX-128 (IL-13/TSLP bispecific) targets moderate-to-severe AD and asthma. PX-130 (IL-13/IL-22) preclinical for AD. Plus 8 additional bispecific programs.

Competitive Landscape

Dupixent ($13B+) dominates. JAK inhibitors growing. Bispecific dual-targeting unproven but could offer differentiated efficacy.

Deal timeline

Related deals — scored

DealYearValueOutcome
Johnson & Johnson / Proteologix Inc. (this deal)2024$850M66
Johnson & Johnson / Legend Biotech Corporation2017$9.0B96
Johnson & Johnson / Centocor Inc.1999$4.9B92
Johnson & Johnson / Cougar Biotechnology, Inc.2009$970M91
Johnson & Johnson / Actelion Ltd2017$30.0B90
Johnson & Johnson / Aragon Pharmaceuticals Inc.2013$1.0B89
Johnson & Johnson / Legend Biotech Corporation2017$350M83

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