Who are OPC-61815 injection's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): fosnetupitant/ palonosetron, Aprepitant plus Ondansetron, Fosaprepitant for Injection, Akynzeo solution, MK0733 / Duration of Treatment: 18 Weeks, Standard: Aprepitant.

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Last reviewed 2026-06-10 · How we verify

OPC-61815 injection — Competitive Intelligence Brief

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

OPC-61815 injection (OPC-61815 injection) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: NK1 receptor antagonist. Area: Oncology / Supportive Care.

phase 3 NK1 receptor antagonist NK1 receptor (neurokinin-1 receptor) Oncology / Supportive Care Small molecule Live · refreshed every 30 min

Target snapshot

OPC-61815 injection (OPC-61815 injection) — Otsuka Pharmaceutical Co., Ltd.. OPC-61815 is a selective antagonist of the neurokinin-1 (NK1) receptor that reduces substance P signaling in the central nervous system.

Comparator set (6 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target
OPC-61815 injection TARGET	OPC-61815 injection	Otsuka Pharmaceutical Co., Ltd.	phase 3	NK1 receptor antagonist	NK1 receptor (neurokinin-1 receptor)
fosnetupitant/ palonosetron	fosnetupitant/ palonosetron	Helsinn Healthcare SA	marketed	NK1 receptor antagonist / 5-HT3 receptor antagonist combination	NK1 receptor (substance P receptor) / 5-HT3 receptor
Aprepitant plus Ondansetron	Aprepitant plus Ondansetron	University of Pittsburgh	marketed	NK1 receptor antagonist + 5-HT3 receptor antagonist combination	NK1 receptor (aprepitant); 5-HT3 receptor (ondansetron)
Fosaprepitant for Injection	Fosaprepitant for Injection	Montefiore Medical Center	marketed	NK1 receptor antagonist	NK1 receptor (neurokinin-1 receptor)
Akynzeo solution	Akynzeo solution	Helsinn Healthcare SA	marketed	NK1 receptor antagonist / 5-HT3 receptor antagonist combination	NK1 receptor (netupitant component); 5-HT3 receptor (palonosetron component)
MK0733 / Duration of Treatment: 18 Weeks	MK0733 / Duration of Treatment: 18 Weeks	Organon and Co	phase 3	NK1 receptor antagonist	NK1 receptor (neurokinin-1 receptor)
Standard: Aprepitant	Standard: Aprepitant	CCTU	phase 3	NK1 receptor antagonist	NK1 receptor

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

No upcoming patent expiries for this set.

Sponsor landscape (NK1 receptor antagonist class)

Merck Sharp & Dohme LLC · 4 drugs in this class
GlaxoSmithKline · 3 drugs in this class
Organon and Co · 3 drugs in this class
CCTU · 2 drugs in this class
Acacia Pharma Ltd · 2 drugs in this class
Sanofi · 1 drug in this class
Santen SAS · 1 drug in this class
CR-CSSS Champlain-Charles-Le Moyne · 1 drug in this class
Montefiore Medical Center · 1 drug in this class
New Mexico Cancer Research Alliance · 1 drug in this class

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Cite this brief

Drug Landscape (2026). OPC-61815 injection — Competitive Intelligence Brief. https://druglandscape.com/ci/opc-61815-injection. Accessed 2026-06-10.

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing