|
|
|
Pronunciation |
|
(kar
MUS
teen) |
|
|
U.S. Brand
Names |
|
BiCNU® |
|
|
Generic
Available |
|
No |
|
|
Synonyms |
|
BCNU |
|
|
Pharmacological Index |
|
Antineoplastic Agent, Alkylating Agent |
|
|
Use |
|
Treatment of brain tumors (glioblastoma, brainstem glioma, medulloblastoma,
astrocytoma, ependymoma, and metastatic brain tumors), multiple myeloma,
Hodgkin's disease (secondary therapy in combination with other approved drugs in
patients who relapse while being treated with primary therapy or who fail to
respond to primary therapy) and non-Hodgkin's lymphomas (secondary therapy in
combination with other approved drugs in patients who relapse while being
treated with primary therapy or who fail to respond to primary therapy),
melanoma, lung cancer, colon cancer |
|
|
Pregnancy Risk
Factor |
|
D |
|
|
Contraindications |
|
Hypersensitivity to carmustine or any component, myelosuppression from
previous chemotherapy or other causes |
|
|
Warnings/Precautions |
|
The U.S. Food and Drug Administration (FDA) currently recommends that
procedures for proper handling and disposal of antineoplastic agents be
considered. Administer with caution to patients with depressed platelet,
leukocyte or erythrocyte counts, renal or hepatic impairment. Bone marrow
depression, notably thrombocytopenia and leukopenia, may lead to bleeding and
overwhelming infections in an already compromised patient; will last for at
least 6 weeks after a dose, do not give courses more frequently than every 6
weeks because the toxicity is cumulative. |
|
|
Adverse
Reactions |
|
>10%:
Cardiovascular: Hypotension is associated with HIGH-DOSE administration
secondary to the high alcohol content of the diluent
Central nervous system: Dizziness and ataxia
Dermatologic: Hyperpigmentation of skin
Gastrointestinal: Nausea and vomiting occur within 2-4 hours after drug
injection; dose-related
Emetic potential:
<200 mg: Moderately high (60% to 90%)
greater than or equal to 200 mg: High (>90%)
Time course of nausea/vomiting: Onset: 2-6 hours; Duration: 4-6 hours
Hematologic: Myelosuppressive: Delayed, occurs 4-6 weeks after administration
and is dose-related; usually persists for 1-2 weeks; thrombocytopenia is usually
more severe than leukopenia. Myelofibrosis and preleukemic syndromes have been
reported.
WBC: Moderate
Platelets: Severe
Onset (days): 14
Nadir (days): 21-35
Recovery (days): 42-50
Local: Burning at injection site
Irritant chemotherapy: Pain at injection site
Ocular: Ocular toxicity, and retinal hemorrhages
1% to 10%:
Dermatologic: Facial flushing is probably due to the ethanol used in
reconstitution, alopecia
Gastrointestinal: Stomatitis, diarrhea, anorexia
Hematologic: Anemia
<1%: Hyperpigmentation, dermatitis, reversible toxicity, increased LFTs in
20%, fibrosis occurs mostly in patients treated with prolonged total doses
>1400 mg/m2 or with bone marrow transplantation doses; risk
factors include a history of lung disease, concomitant bleomycin, or radiation
therapy; PFTs should be conducted prior to therapy and monitored; patients with
predicted FVC or DLco <70% are at a higher risk; azotemia,
decrease in kidney size |
|
|
Overdosage/Toxicology |
|
Symptoms of overdose include nausea, vomiting, thrombocytopenia, leukopenia
There are no known antidotes and treatment is primarily symptomatic and
supportive |
|
|
Drug
Interactions |
|
Increased toxicity:
Etoposide: Reported to cause severe hepatic dysfunction with
hyperbilirubinemia, ascites, and thrombocytopenia |
|
|
Stability |
|
Store intact vials under refrigeration; vials are stable for 36 days at room
temperature
Initially dilute with 3 mL of absolute alcohol diluent. Further dilute with
27 mL SWI to result in a concentration of 3.3 mg/mL with 10% ethanol. Initial
solutions are stable for 8 hours at room temperature
(25°C) and 24 hours at refrigeration
(2°C to 8°C) and protected from
light.
Further dilution in D5W or NS is stable for 8 hours at room
temperature (25°C) and 48 hours at refrigeration
(4°C) in glass or Excel® protected
from light
Incompatible with sodium bicarbonate; compatible with
cisplatin
Standard I.V. dilution: Dose/150-500 mL D5W or NS
Must use glass or Excel® containers for administration
Protect from light
Stable for 8 hours at room temperature (25°C) and 48
hours under refrigeration (4°C) |
|
|
Mechanism of
Action |
|
Interferes with the normal function of DNA by alkylation and cross-linking
the strands of DNA, and by possible protein modification |
|
|
Pharmacodynamics/Kinetics |
|
Absorption: Highly lipid soluble
Distribution: Readily crosses the blood-brain barrier producing CSF levels
equal to 15% to 70% of blood plasma levels; distributes into breast milk
Metabolism: Rapid
Half-life (biphasic): Initial: 1.4 minutes; Secondary: 20 minutes (active
metabolites may persist for days and have a plasma half-life of 67 hours)
Elimination: ~60% to 70% excreted in the urine within 96 hours and 6% to 10%
excreted as CO2 by the lungs |
|
|
Usual Dosage |
|
I.V. (refer to individual protocols):
Adults: 150-200 mg/m2 every 6 weeks as a single dose or divided
into daily injections on 2 successive days; next dose is to be determined based
on hematologic response to the previous dose. Listed are the suggested
carmustine doses, based upon the nadir after the prior dose.
- Leukocytes >4000 mm3 and platelets >100,000
mm3: Give 100% of prior dose
- Leukocytes 3000-3999 mm3 and platelets 75,000-99,999
mm3: Give 100% of prior dose
- Leukocytes 2000-2999 mm3 and platelets 25,000-74,999
mm3: Give 70% of prior dose
- Leukocytes <2000 mm3 and platelets <25,000
mm3: Give 50% of prior dose
Primary brain cancer: 150-200 mg/m2 every 6-8 weeks
Autologous BMT: ALL OF THE FOLLOWING DOSES ARE FATAL WITHOUT BMT
Combination therapy: Up to 300-900 mg/m2
Single agent therapy: Up to 1200 mg/m2 (fatal necrosis is
associated with doses >2 g/m2)
Hemodialysis: Supplemental dosing is not required
Dosing adjustment in hepatic impairment: Dosage adjustment may be
necessary; however, no specific guidelines are available |
|
|
Monitoring
Parameters |
|
CBC with differential and platelet count, pulmonary function, liver function,
and renal function tests; monitor blood pressure during
administration |
|
|
Mental Health: Effects
on Mental Status |
|
Dizziness is common |
|
|
Mental Health:
Effects on Psychiatric
Treatment |
|
May cause myelosuppression; use caution with clozapine and
carbamazepine |
|
|
Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
|
No information available to require special precautions |
|
|
Dental Health:
Effects on Dental Treatment |
|
No effects or complications reported |
|
|
Patient
Information |
|
This drug can only be administered by infusion. Limit oral intake for 4-6
hours before therapy. Do not use of alcohol, aspirin-containing products, and
OTC medications without consulting prescriber. It is important to maintain
adequate nutrition and hydration during therapy (2-3 L/day of fluids unless
instructed to restrict fluid intake); frequent small meals may help. Take 2-3
L/day of fluids. You may experience nausea or vomiting (frequent small meals,
frequent mouth care, sucking lozenges, or chewing gum may help). If this is
ineffective, consult prescriber for antiemetic medication. You may experience
loss of hair (reversible). You will be more susceptible to infection (avoid
crowds and exposure to infection as much as possible). You will be more
sensitive to sunlight; use sunblock, wear protective clothing and dark glasses,
or avoid direct exposure to sunlight. Frequent mouth care with soft toothbrush
or cotton swabs and frequent mouth rinses may help relieve mouth sores. Report
fever, chills, unusual bruising or bleeding, signs of infection, excessive
fatigue, yellowing of eyes or skin, or change in color of urine or stool.
Pregnancy/breast-feeding precautions: Inform prescriber if you are pregnant.
Do not get pregnant during or for 1 month following therapy. Male: Do not cause
a female to become pregnant. Male/female: Consult prescriber for instruction on
appropriate barrier contraceptive measures. This drug may cause severe fetal
defects. Do not breast-feed. |
|
|
Nursing
Implications |
|
Must administer in glass containers; accidental skin contact may cause
transient burning and brown discoloration of the skin |
|
|
Dosage Forms |
|
Powder for injection: 100 mg/vial packaged with 3 mL of absolute alcohol for
use as a sterile diluent |
|
|
References |
|
Aronin PA, Mahaley MS Jr, Rudnick SA, et al,
"Prediction of BCNU Pulmonary Toxicity in Patients With Malignant Gliomas," N
Engl J Med, 1980, 303(4):183-8.
Buzaid AC and Murren J, "Chemotherapy for Advanced Malignant Melanoma,"
Int J Clin Lab Res, 1992, 21(3):205-9.
Colvin M, Hartner J and Summerfield M,
"Stability of Carmustine in the Presence of Sodium Bicarbonate," Am J Hosp
Pharm, 1980, 37(5):677-8.
Jeffrey LP, Chairman, National Study Commission on Cytotoxic Exposure.
Position Statement.
"The Handling of Cytotoxic Agents by Women Who Are Pregnant, Attempting to Conceive, or Breast-Feeding,"
January 12, 1987.
Lesser GJ and Grossman SA,
"The Chemotherapy of Adult Primary Brain Tumors," Cancer Treat Rev, 1993,
19(3):261-81.
Mahendra P, Johnson D, Scott MA, et al,
"Peripheral Blood Progenitor Cell Transplantation: A Single Centre Experience Comparing Two Mobilisation Regimens in 67 Patients,"
Bone Marrow Transplant, 1996, 17(4):503-7.
O'Driscoll BR, Hasleton PS, Taylor PM, et al,
"Active Lung Fibrosis Up to 17 Years After Chemotherapy With Carmustine (BCNU) in Childhood,"
N Engl J Med, 1990, 323(6):378-82.
Wiencke JK and Wiemels J,
"Genotoxicity of 1,3,-bis(2-chloroethyl)-1-nitrosourea (BCNU)," Mutat
Res, 1995, 339(2):91-119. |
|
Copyright © 1978-2000 Lexi-Comp Inc. All Rights Reserved
| |