HERCEPTIN Rx

Indications for HERCEPTIN:

HER2-overexpressing metastatic breast cancer as a single agent in patients who have received one or more chemotherapy regimens; or in combination with paclitaxel in patients who have not received chemotherapy. Adjuvant treatment in HER2-overexpressing, node-positive or node-negative breast cancer (as a single agent following multi-modality anthracycline based therapy; in combination with doxorubicin, cyclophosphamide, and either paclitaxel or docetaxel; or in combination with docetaxel and carboplatin).

Adult:

Do not substitute for or with ado-trastuzumab emtansine. Give as IV infusion. Initially 4mg/kg over 90 mins, followed by 2mg/kg over 30 mins weekly; administer until tumor progression. Adjuvant treatment (administer trastuzumab weekly for 52 weeks; therapy >52 weeks: not recommended); In combination therapy: with doxorubicin and cyclophosphamide, followed by either paclitaxel or docetaxel; or with docetaxel/carboplatin: initially 4mg/kg over 90 mins, followed by 2mg/kg over 30 mins once weekly for the 1^st 12 weeks (concurrently w. paclitaxel or docetaxel) or 1^st 18 weeks (concurrently w. docetaxel/carboplatin). One week after the last trastuzumab weekly dose, give trastuzumab 6mg/kg over 30–90 mins every 3 weeks. Following multi-modality anthracycline based therapy: initially 8mg/kg over 90 mins, then 6mg/kg over 30–90 mins every 3 weeks. Infusion reactions or cardiomyopathy: see full labeling.

Children:

Not established.

Warnings/Precautions:

Increased risk of cardiomyopathy. Conduct cardiac assessment (eg, history, physical exam, LVEF) at baseline, every 3 months during and after therapy or every 6 months for ≥2yrs after therapy (if adjuvant); repeat LVEF at 4 week intervals if dose is withheld due to significant left ventricular cardiac dysfunction. Interrupt therapy if dyspnea or significant hypotension occurs; consider discontinuing permanently if severe infusion reactions, CHF, pulmonary toxicity, or significant left ventricular myocardial dysfunction develops. Symptomatic intrinsic lung disease. Extensive tumor involvement of the lungs. Test for HER2 protein overexpression and HER2 gene amplification using FDA-approved tests for specific tumor type (breast or gastric/gastroesophageal adenocarcinoma). Embryo-fetal toxicity (eg, oligohydramnios): exclude pregnancy status before initiation. Pregnancy: avoid; use effective contraception during and for 7 months after therapy. Nursing mothers.

Interactions:

Increased cardiomyopathy with anthracycline-containing chemotherapy. Increased toxicity with other myelosuppressives.

Pharmacological Class:

Human epidermal growth factor receptor (HER2) inhibitor.

Adverse Reactions:

Fever, diarrhea, nausea, chills, infections, increased cough, headache, CHF, insomnia, fatigue, dyspnea, rash, neutropenia, anemia, thrombocytopenia, stomatitis, mucosal inflammation, weight loss, nasopharyngitis, dysgeusia, myalgia, thrombosis/embolism; severe infusion reactions, febrile neutropenia/exacerbation of chemotherapy-induced neutropenia, pulmonary toxicity (eg, interstitial pneumonitis), cardiomyopathy (eg, left ventricular myocardial dysfunction).

Note:

Enroll pregnant women with breast cancer who are using trastuzumab in the MotHER-the Herceptin Pregnancy Registry (800) 690-6720.
Testing considerations: HER2 protein overexpression

Generic Availability:

NO

How Supplied:

Vial—1 (w. diluent)

Indications for HERCEPTIN:

HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma, in combination with cisplatin and capecitabine or 5-fluorouracil, in patients who have not received prior treatment.

Adult:

Do not substitute for or with ado-trastuzumab emtasine. Give as IV infusion. Initially 8mg/kg over 90 mins, followed by 6mg/kg over 30–90 mins every 3 weeks until disease progression. Infusion reactions or cardiomyopathy: see full labeling.

Children:

Not established.

Warnings/Precautions:

Increased risk of cardiomyopathy. Conduct cardiac assessment (eg, history, physical exam, LVEF) at baseline, every 3 months during and after therapy or every 6 months for ≥2yrs after therapy (if adjuvant); repeat LVEF at 4 week intervals if dose is withheld due to significant left ventricular cardiac dysfunction. Interrupt therapy if dyspnea or significant hypotension occurs; consider discontinuing permanently if severe infusion reactions, CHF, pulmonary toxicity, or significant left ventricular myocardial dysfunction develops. Symptomatic intrinsic lung disease. Extensive tumor involvement of the lungs. Test for HER2 protein overexpression and HER2 gene amplification using FDA-approved tests for specific tumor type (breast or gastric/gastroesophageal adenocarcinoma). Embryo-fetal toxicity (eg, oligohydramnios): exclude pregnancy status before initiation. Pregnancy: avoid; use effective contraception during and for 7 months after therapy. Nursing mothers.

Interactions:

Increased cardiomyopathy with anthracycline-containing chemotherapy. Increased toxicity with other myelosuppressives.

Pharmacological Class:

Human epidermal growth factor receptor (HER2) inhibitor.

Adverse Reactions:

Diarrhea, fatigue, anemia, stomatitis, weight loss, upper respiratory tract infections, fever, thrombocytopenia, mucosal inflammation, nasopharyngitis, dysgeusia, infections; severe infusion reactions, febrile neutropenia/exacerbation of chemotherapy-induced neutropenia, pulmonary toxicity (eg, interstitial pneumonitis), cardiomyopathy (eg, left ventricular myocardial dysfunction); pregnant women: possible oligohydramnios (monitor).

Note:

Testing considerations: HER2 protein overexpression

Generic Availability:

NO

How Supplied:

Vial—1 (w. diluent)