Pharma BD Deal Intelligence

Cubist Pharmaceuticals, Inc. / Adolor Corporation

2011 · Acquisition/Merger · $415M · Complete

Cubist's $190M-upfront acquisition of Adolor delivered a partially-achieved bust: marketed drug Entereg grew to $43.8M in nine months of 2014 but never clearly hit the ~$100M peak-sales target, while the pipeline bet ADL5945 was never approved as rival PAMORAs beat it to market—Cubist itself was absorbed by Merck in 2015, reducing the deal to a footnote.

WRONG BY 39 POINTS
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The coverage arc

Oct 24, 2011 BioSpace Neutral

$4.25/share cash plus CPRs of up to $4.50/share contingent on ADL5945 FDA/EMA approval by July 2019 and competitive labeling — the structure transferred…

Oct 24, 2011 MedCity News Bullish

Industry observers said the deal could stimulate broader interest in OIC, and that Cubist's hospital sales force was well-suited to commercialize Entereg into…

Jan 21, 2015 Genetic Engineering & Biotechnology News Bullish

By 2014 Entereg US revenue had grown 17.6% YoY to $43.8M through nine months, and the asset was a contributing piece of Merck's $9.5B Cubist acquisition that…

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Cubist acquired Adolor for $4.25/share (~$190M cash) plus CPRs of up to $4.50/share tied to ADL5945 milestones, total up to $415M. Deal added marketed Entereg and a Phase 2 OIC candidate to Cubist's hospital franchise.

Did it work? Outcome assessment

Strategic verdict
Partially Achieved
Pipeline outcome
Mixed
Entereg (alvimopan) remained marketed and grew modestly under Cubist and then Merck. Bevenopran (ADL5945/CB-5945), the lead OIC asset, was paused in Phase 3 in January 2014 amid FDA cardiovascular-safety scrutiny of mu-opioid antagonists; the Phase 3 efficacy studies were terminated and the program was discontinued, never resurfacing after Merck acquired Cubist in 2015.

Key facts

Disease & market context

Postoperative Ileus & Opioid-Induced Constipation

2.7M US cases/yr · $1.5B US POI hospital cost burden annually · >$100M Cubist projected peak Entereg US sales

Disease Overview

Postoperative ileus is the temporary cessation of coordinated bowel motility after abdominal surgery, delaying GI recovery, prolonging hospital stay, and adding $8,000–9,000 per patient in cost. Opioid-induced constipation is a chronic complication of opioid analgesia in cancer pain and non-cancer chronic pain populations, driven by mu-opioid receptor agonism in the enteric nervous system.

Competitive Landscape

Cubist's acquisition of Adolor combined a marketed hospital asset with a clinical-stage chronic-care candidate. Entereg (alvimopan) was the first and only FDA-approved peripherally acting mu-opioid receptor antagonist (PAMORA) for accelerated GI recovery after partial bowel resection, with a REMS due to cardiovascular signal in chronic OIC trials. In OIC, ADL5945 was positioned to compete against Salix's Relistor (methylnaltrexone, originally Progenics/Wyeth), Takeda/Sucampo's Amitiza (lubiprostone, ClC-2 activator), and Astellas/AstraZeneca's Movantik (naloxegol). Each had differentiated trial populations — Relistor in advanced illness, Movantik in non-cancer chronic pain — leaving room for a once-daily oral PAMORA. Cubist projected peak Entereg sales above $100M and saw the deal as fitting its hospital franchise alongside Cubicin (daptomycin). However, in November 2012 Cubist discontinued ADL5945 development after Phase 3 trials missed key endpoints, eliminating the bulk of the CPR upside. The transaction nonetheless reinforced the pivot of Cubist toward hospital acute-care that Merck later acquired for $9.5B in 2015.

Related deals — scored

DealYearValueOutcome
Cubist Pharmaceuticals, Inc. / Adolor Corporation (this deal)2011$415M49
Cubist Pharmaceuticals, Inc. / Calixa Therapeutics, Inc.2009$402M52
Cubist Pharmaceuticals, Inc. / Optimer Pharmaceuticals, Inc.2013$801M45
Cubist Pharmaceuticals, Inc. / Trius Therapeutics Inc.2013$707M44
UCB SA / Celltech Group plc2004$2.7B92
Johnson & Johnson / Centocor Inc.1999$4.9B92
Takeda Pharmaceutical Company Ltd. / Millennium Pharmaceuticals2003$8.8B82

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