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Pertuzumab

Monoclonal Antibody · Antineoplastic

Monoclonal AntibodyAntineoplasticATC null
CDSCO approvedSchedule H
EXCRETION
not curated
INTERACTIONS
1 major
incl. contraindicated
PREGNANCY
X
FDA category + note
Top interactionssee all 2
  • AnthracyclinesContraindicatedTextbookG&G 14e · p1419

Mechanism

Pertuzumab is a recombinant humanised monoclonal antibody that binds to the extracellular domain (subdomain II) of the human epidermal growth factor receptor 2 protein (HER2). This binding inhibits HER2 dimerisation and subsequently blocks HER2 intracellular signaling, thereby suppressing tumor cell growth.

Indications

HER2-positive early stage breast cancer (in combination with trastuzumab and chemotherapy)HER2-positive metastatic or locally recurrent unresectable breast cancer (in combination with trastuzumab and docetaxel)breast cancer (HER2 amplification; HER2 overexpression)gastric cancer (HER2 amplification; HER2 overexpression)HER2-positive metastatic breast cancer (in combination with trastuzumab and docetaxel)HER2-positive locally advanced, inflammatory, or early-stage breast cancer (in combination with trastuzumab and docetaxel)Approved for use in early-stage breast cancerFor HER2-positive tumors: neoadjuvant therapy (with or without trastuzumab for 4–5 months), followed by further pertuzumab to complete a year if pCR achievedFor smaller tumors (clinically node-negative, <3cm) with HER2-positive status, regimen of single-agent weekly paclitaxel for 12 weeks in conjunction with a year of trastuzumab (with or without pertuzumab)Adjuvant pertuzumab added to trastuzumab provides modest benefit

Dosing

Adult
Adult: (consult product literature or local protocols) BY INTRAVENOUS INFUSION

Pharmacokinetics

Half-life
18 days (median)

Contraindications

  • Conditions that could impair left ventricular function
  • History of congestive heart failure
  • Impaired left ventricular function
  • Prior anthracycline exposure
  • Radiotherapy to the chest area
  • Recent myocardial infarction
  • Serious cardiac arrhythmia
  • Uncontrolled hypertension

Side effects

Common
AlopeciaAnaemiaAppetite decreasedArthralgiaAstheniaChillsConstipationCoughCytokine release syndromeDiarrhoeaDizzinessDyspepsiaDyspnoeaExcessive tearingFeverHeadacheHypersensitivityIncreased risk of infectionInfusion related reactionInsomniaLeucopeniaMucositisMyalgiaNail disorderNauseaNeutropeniaOedemaPainPeripheral neuropathyRespiratory disordersSkin reactionsStomatitisTaste alteredVomitingFatigueLoose stools or diarrhea (manageable with loperamide)
Serious
  • Cardiotoxicity with reduced left ventricular function (leading to congestive heart failure)
  • Infusion related reaction
  • Hypersensitivity
  • Cytokine release syndrome
  • Myelosuppression (e.g., neutropenia, leucopenia, anaemia)
  • Increased risk of infection
  • cardiotoxicity (similar to trastuzumab)
  • embryofetal harm

Pregnancy & lactation

Pregnancy

X

Drug interactions

Anthracyclines
Contraindicated
Textbook

Increased cardiotoxicity.

Combinations with cardiotoxic anthracyclines are not indicated.

Source: G&G 14e · p1419

Trastuzumab
Moderate
Database

Intended dual HER2 blockade — additive diarrhoea/cardiac

Standard combination monitoring

Source: Kimi deep-research + Cla

1 additional low-confidence interaction hidden — those rows lack a documented mechanism or management plan in our sources.

Related guidelines

Other Monoclonal Antibody drugs

Ask House about Pertuzumab

Continue into a citation-backed clinical answer with the drug context already attached.

Sources: Goodman & Gilman 14e, Harrison 22e, Katzung, BNF·Verified: 2026-05-10 · House clinical team