ONTRUZANT (trastuzumab-dttb)
ONTRUZANT is indicated for the treatment of Breast Cancer; Gastric Cancer; Gastroesophageal Junction Adenocarcinoma.
How ONTRUZANT Works
Ontruzant targets the HER2 proto-oncogene, which encodes a 185 kDa transmembrane receptor protein related to the epidermal growth factor receptor. By binding to this receptor, the drug inhibits the proliferation of tumor cells that overexpress HER2. Additionally, it acts as a mediator of antibody-dependent cellular cytotoxicity, a process where the immune system preferentially targets and destroys cancer cells with high HER2 expression.
Details
- Status
- Prescription
- First Approved
- 2019-01-18
- Routes
- IV (INFUSION)
- Dosage Forms
- POWDER
ONTRUZANT Approval History
What ONTRUZANT Treats
3 indicationsONTRUZANT is approved for 3 conditions since its original approval in 2019. These indications span multiple therapeutic areas including oncology, immunology, and more.
- Breast Cancer
- Gastric Cancer
- Gastroesophageal Junction Adenocarcinoma
ONTRUZANT Boxed Warning
CARDIOMYOPATHY, INFUSION REACTIONS, EMBRYO-FETAL TOXICITY, and PULMONARY TOXICITY WARNING: CARDIOMYOPATHY, INFUSION REACTIONS, EMBRYO-FETAL TOXICITY, and PULMONARY TOXICITY See full prescribing information for complete boxed warning Cardiomyopathy: trastuzumab products can result in subclinical and clinical cardiac failure manifesting as CHF, and decreased LVEF, with greatest risk when administered concurrently with anthracyclines. Evaluate cardiac function prior to and during treatment. Discont...
WARNING: CARDIOMYOPATHY, INFUSION REACTIONS, EMBRYO-FETAL TOXICITY, and PULMONARY TOXICITY WARNING: CARDIOMYOPATHY, INFUSION REACTIONS, EMBRYO-FETAL TOXICITY, and PULMONARY TOXICITY See full prescribing information for complete boxed warning Cardiomyopathy: trastuzumab products can result in subclinical and clinical cardiac failure manifesting as CHF, and decreased LVEF, with greatest risk when administered concurrently with anthracyclines. Evaluate cardiac function prior to and during treatment. Discontinue Ontruzant for cardiomyopathy. ( 2.5 , 5.1 ) Infusion Reactions, Pulmonary Toxicity: Discontinue Ontruzant for anaphylaxis, angioedema, interstitial pneumonitis, or acute respiratory distress syndrome. ( 5.2 , 5.4 ) Embryo-Fetal Toxicity: Exposure to trastuzumab products during pregnancy can result in oligohydramnios, in some cases complicated by pulmonary hypoplasia and neonatal death. Advise patients of these risks and the need for effective contraception. ( 5.3 , 8.1 , 8.3 ) Cardiomyopathy Administration of trastuzumab products can result in sub-clinical and clinical cardiac failure. The incidence and severity was highest in patients receiving trastuzumab with anthracycline-containing chemotherapy regimens. Evaluate left ventricular function in all patients prior to and during treatment with Ontruzant. Discontinue Ontruzant treatment in patients receiving adjuvant therapy and withhold Ontruzant in patients with metastatic disease for clinically significant decrease in left ventricular function [see Dosage and Administration (2.5) and Warnings and Precautions (5.1) ] . Infusion Reactions; Pulmonary Toxicity Administration of trastuzumab products can result in serious and fatal infusion reactions and pulmonary toxicity. Symptoms usually occur during or within 24 hours of administration of trastuzumab products. Interrupt Ontruzant infusion for dyspnea or clinically significant hypotension. Monitor patients until symptoms completely resolve. Discontinue Ontruzant
ONTRUZANT Target & Pathway
ProTarget
A receptor tyrosine kinase that promotes cell growth and division. Approximately 20% of breast cancers overexpress HER2, leading to aggressive tumor growth. Targeting HER2 blocks these growth signals and can trigger immune-mediated destruction of cancer cells.
Pathway Context
HER2 forms dimers with other HER family members to activate growth signaling
A receptor that triggers cell growth, proliferation, and survival when activated. Mutations or overexpression of EGFR drive many cancers, particularly lung cancer. Blocking EGFR stops the growth signals that fuel tumor progression.
ONTRUZANT is a lower-cost alternative to Herceptin with no clinically meaningful differences. Requires prescriber approval to substitute.
ONTRUZANT Competitive Set
ProThree rings of competition based on shared molecular targets and treated indications.
Direct competitors
Same target(s) AND same indication — head-to-head.
MoA expansion candidates
Same target(s), different indications — where else is this mechanism being explored?
Indication competitors
Same indication, different mechanism — what else might this patient receive?
Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.
What's emerging in ONTRUZANT's indications
See all emerging drugs →Phase 3 candidates targeting molecules with no FDA-approved drug, in indications ONTRUZANT treats. First-in-class if their pivotal trials read out positive.
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Active Pipeline
Ongoing clinical trials by development phase
Key Completed Trials
Completed studies with published results, ranked by significance
Trial Timeline
Full development history with FDA approval milestones
Understanding FDA Approval Types
| Count | Type | What it means |
|---|---|---|
| - | ORIG | Original approval - drug first enters market |
| - | SUPPL - Efficacy | New indication (new disease/condition approved) |
| - | SUPPL - Labeling | Label text changes (warnings, dosing updates) |
| - | SUPPL - Manufacturing | Production changes (new facility) |
| - | SUPPL - Chemistry | Formulation changes (new dosage strength) |
Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.
ONTRUZANT FDA Label Details
Indications & Usage
FDA Label (PDF)ONTRUZANT is indicated for the treatment of Breast Cancer; Gastric Cancer; Gastroesophageal Junction Adenocarcinoma.
WARNING: CARDIOMYOPATHY, INFUSION REACTIONS, EMBRYO-FETAL TOXICITY, and PULMONARY TOXICITY WARNING: CARDIOMYOPATHY, INFUSION REACTIONS, EMBRYO-FETAL TOXICITY, and PULMONARY TOXICITY See full prescribing information for complete boxed warning Cardiomyopathy: trastuzumab products can result in subclin...
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Data Sources
Data sourced from official FDA and NIH databases. Click links to verify on original sources.