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Docetaxel and prednisone for metastatic hormone-refractory prostate cancer[1]

Docetaxel and prednisone for metastatic hormone-refractory prostate cancer[1]
Cycle length: 21 days.
Drug Dose and route Administration Given on days
Docetaxel 75 mg/m2 IV* Dilute in 250 mL normal saline and administer over one hour. Day 1
Prednisone 5 mg orally Twice daily. Days 1 to 21
Pretreatment considerations:
Emesis risk
  • LOW (10 to 30% frequency of emesis).
  • Refer to UpToDate topic on "Prevention and treatment of chemotherapy-induced nausea and vomiting in adults".
Prophylaxis for infusion reaction and fluid retention
  • Premedicate with dexamethasone prior to docetaxel administration.[2]
  • Refer to UpToDate topic on "Infusion reactions to systemic chemotherapy".
Vesicant/irritant properties
  • Docetaxel is an irritant but can cause significant tissue damage; avoid extravasation.
  • Refer to UpToDate topic on "Extravasation injury from chemotherapy and other non-antineoplastic vesicants".
Infection prophylaxis
  • Primary prophylaxis with hematopoietic growth factors is not recommended (incidence of febrile neutropenia approximately 3%[1]).
  • Refer to UpToDate topic on "Use of granulocyte colony stimulating factors in adult patients with chemotherapy-induced neutropenia and conditions other than acute leukemia, myelodysplastic syndrome, and hematopoietic cell transplantation".
Dose adjustment for baseline liver or renal dysfunction
  • Docetaxel should not be administered to patients with a serum bilirubin above the ULN or to patients with transaminase elevations >1.5 times the ULN in conjunction with alkaline phosphatase >2.5 times the ULN.[2]
  • Refer to UpToDate topic on "Chemotherapy hepatotoxicity and dose modification in patients with liver disease: Conventional cytotoxic agents" and "Chemotherapy hepatotoxicity and dose modification in patients with liver disease: Molecularly targeted agents".
Dose adjustment for known drug interactions
  • Caution is required if administering docetaxel with strong CYP3A4 inhibitors. According to the United States Prescribing Information, avoid the use of docetaxel with strong CYP3A4 inhibitors (if possible). If concomitant therapy cannot be avoided, monitor closely for toxicity and consider a docetaxel dose reduction.[2] Docetaxel dose reductions for concomitant therapies should be individualized based on patient factors (eg, performance status) and the intent of therapy (ie, curative or palliative).
  • Refer to "Suggested dose modifications for toxicity" below.
Monitoring parameters:
  • CBC with differential at least every three weeks during treatment.
  • Renal and liver function testing at least every three weeks during treatment.
  • Monitor for neurologic function and gastrointestinal toxicities.
  • Patients with renal impairment, hyperuricemia, and bulky tumors are at risk for TLS and should undergo correction of dehydration and lowering of high serum uric acid levels prior to treatment initiation, and be closely monitored for TLS during and after treatment.
  • Refer to UpToDate topics on "Tumor lysis syndrome: Definition, pathogenesis, clinical manifestations, etiology and risk factors" and "Tumor lysis syndrome: Prevention and treatment".
Suggested dose modifications for toxicity:
Myelotoxicity
  • Docetaxel should only be administered if the absolute neutrophil count is >1500 cells/microL. Reduce docetaxel to 60 mg/m2 for subsequent cycles for severe prolonged neutropenia (<500 cells/microL lasting seven days or more), febrile neutropenia, or an infection with life-threatening consequences.[2]
Cutaneous, mucosal, and neurologic toxicity
  • For severe or cumulative cutaneous reactions (erythema, desquamation), grade 3 or 4 stomatitis or >grade 2 neurosensory signs and/or symptoms, reduce docetaxel dose to 60 mg/m2.[1] Discontinue docetaxel if toxicity persists at the lower dose.
Hepatotoxicity
  • Docetaxel dose reduction may be needed for patients who develop significant alterations in transaminases and alkaline phosphatase during therapy. Docetaxel should not be administered to patients with a serum bilirubin above the ULN or to patients with transaminase elevations >1.5 times the ULN in conjunction with alkaline phosphatase >2.5 times the ULN.
  • Refer to UpToDate topic on "Chemotherapy hepatotoxicity and dose modification in patients with liver disease: Conventional cytotoxic agents" and "Chemotherapy hepatotoxicity and dose modification in patients with liver disease: Molecularly targeted agents".
If there is a change in body weight of at least 10%, doses should be recalculated.
This table is provided as an example of how to administer this regimen; there may be other acceptable methods. This regimen must be administered by a clinician trained in the use of chemotherapy, who should use independent medical judgment in the context of individual circumstances to make adjustments, as necessary.

IV: intravenous; ULN: upper limit of normal; CYP3A4: cytochrome P450 3A4; CBC: complete blood count; TLS: tumor lysis syndrome.

* Some clinicians use a dose of 70 to 75 mg/m2 to minimize toxicity.

¶ A list of strong and moderate CYP3A4 inhibitors is available as a separate table in UpToDate. Specific interactions may be determined by use of the Lexicomp drug interactions program included within UpToDate.
References:
  1. Tannock IF, et al. N Engl J Med 2004; 351:1502.
  2. Docetaxel injection. United States Prescribing Information. US National Library of Medicine. (Available online at dailymed.nlm.nih.gov, accessed on March 15, 2022).
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