Dosage & Administration
Recommended dosage: 100 mg orally once daily.
Daurismo Prescribing Information
DAURISMO can cause embryo-fetal death or severe birth defects when administered to a pregnant woman. DAURISMO is embryotoxic, fetotoxic, and teratogenic in animals [see Warnings and Precautions (5.1), Use in Specific Populations (8.1)].
Conduct pregnancy testing in females of reproductive potential prior to initiation of DAURISMO treatment. Advise females of reproductive potential to use effective contraception during treatment with DAURISMO and for at least 30 days after the last dose [see Warnings and Precautions (5.1), Use in Specific Populations (8.1, 8.3)].
Advise males of the potential risk of DAURISMO exposure through semen and to use condoms with a pregnant partner or a female partner of reproductive potential during treatment with DAURISMO and for at least 30 days after the last dose to avoid potential drug exposure [see Warnings and Precautions (5.1), Use in Specific Populations (8.3)].
DAURISMO is indicated, in combination with low-dose cytarabine, for the treatment of newly-diagnosed acute myeloid leukemia (AML) in adult patients who are ≥75 years old or who have comorbidities that preclude use of intensive induction chemotherapy.
Recommended Dosage and Schedule
The recommended dosage of DAURISMO is 100 mg orally once daily on days 1 to 28 in combination with cytarabine 20 mg subcutaneously twice daily on days 1 to 10 of each 28-day cycle in the absence of unacceptable toxicity or loss of disease control. For patients without unacceptable toxicity, treat for a minimum of 6 cycles to allow time for clinical response.
Administer DAURISMO with or without food. Do not split or crush DAURISMO tablets. Administer DAURISMO about the same time each day. If a dose of DAURISMO is vomited, do not administer a replacement dose; wait until the next scheduled dose is due. If a dose of DAURISMO is missed or not taken at the usual time, administer the dose as soon as possible and at least 12 hours prior to the next scheduled dose. Return to the normal schedule the following day. Do not administer 2 doses of DAURISMO within 12 hours.
Monitoring and Dosage Modifications
Assess complete blood counts, electrolytes, renal, and hepatic function prior to the initiation of DAURISMO and at least once weekly for the first month. Monitor electrolytes and renal function once monthly for the duration of therapy. Obtain creatine phosphokinase (CPK) levels prior to initiating DAURISMO and as indicated clinically thereafter (e.g., if muscle symptoms are reported). Monitor electrocardiograms (ECGs) prior to the initiation of DAURISMO, approximately one week after initiation, and then once monthly for the next two months to assess for QTc prolongation. Repeat ECG if abnormal. Certain patients may require more frequent and ongoing ECG monitoring [see Warnings and Precautions (5.2)]. Manage any abnormalities promptly [see Adverse Reactions (6.1)].
See Table 1 for dosage modification guidelines for patients who develop an adverse reaction.
| Adverse Reaction | Recommended Action | |
|---|---|---|
| Abbreviations: CPK = creatine phosphokinase, ULN = upper limit of normal. | ||
| ||
QTc interval prolongation on at least 2 separate electrocardiograms (ECGs) [see Warnings and Precautions (5.2)] | QTc interval greater than 480 ms to 500 ms | Assess electrolyte levels and supplement as clinically indicated. |
QTc interval greater than 500 ms | Assess electrolyte levels and supplement as clinically indicated. | |
QTc interval prolongation with life-threatening arrhythmia | Discontinue DAURISMO permanently. | |
Musculoskeletal adverse reactions [see Warnings and Precautions (5.3)] | Grade 3 * or serum CPK elevation between 2.5 and 10 times upper limit of normal (ULN) | Obtain CPK and serum creatinine levels at least weekly until resolution of clinical signs and symptoms. Interrupt DAURISMO until symptoms reduce to mild or return to baseline. Resume DAURISMO at the same dose level, or at a reduced dose of 50 mg. If toxicity recurs, discontinue DAURISMO. |
Grade 4 * or serum CPK elevation greater than 10 times ULN | Discontinue DAURISMO. | |
Hematologic toxicity [see Adverse Reactions (6.1)] | Platelets less than 10 Gi/L for more than 42 days in the absence of disease | Discontinue DAURISMO and low-dose cytarabine permanently. |
Neutrophil count less than 0.5 Gi/L for more than 42 days in the absence of disease | Discontinue DAURISMO and low-dose cytarabine permanently. | |
Nonhematologic toxicity [see Adverse Reactions (6.1)] | Grade 3 * | Interrupt DAURISMO and/or low-dose cytarabine until symptoms reduce to mild or return to baseline. |
Grade 4 * | Discontinue DAURISMO and low-dose cytarabine permanently. | |
Dosage Modification for Concomitant Use with Moderate CYP3A4 Inducers
Avoid concomitant use of DAURISMO with moderate CYP3A4 inducers. If concomitant use of moderate CYP3A4 inducers cannot be avoided, increase the DAURISMO dosage as tolerated as shown in Table 2. After the moderate CYP3A4 inducer has been discontinued for 7 days, resume the DAURISMO dose taken prior to initiating the moderate CYP3A4 inducer [see Drug Interactions (7), Clinical Pharmacology (12.3)].
| Current Dosage | Adjusted Dosage |
|---|---|
100 mg orally once daily | 200 mg orally once daily |
50 mg orally once daily | 100 mg orally once daily |
DAURISMO 100 mg tablets: round, pale orange film-coated tablet debossed with "Pfizer" on one side and "GLS 100" on the other.
DAURISMO 25 mg tablets: round, yellow film-coated tablet debossed with "Pfizer" on one side and "GLS 25" on the other.
Pregnancy
Risk Summary
Based on its mechanism of action and findings in animal embryo-fetal developmental toxicity studies, DAURISMO can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology (12.1)]. There are no clinical data on the use of DAURISMO in pregnant women to inform of a drug-associated risk of major birth defects and miscarriage. DAURISMO is not recommended for use during pregnancy. Conduct pregnancy testing in female patients of reproductive potential prior to initiating treatment with DAURISMO. Report pregnancy exposures to Pfizer at 1-800-438-1985.
In animal embryo-fetal developmental toxicity studies, repeat-dose oral administration of DAURISMO during organogenesis at maternal exposures that were less than the human exposure at the recommended dose resulted in embryotoxicity, fetotoxicity and teratogenicity in rats and rabbits (see Data). Advise pregnant women of the potential risk to a fetus.
The estimated background risk of major birth defects and miscarriage for the indicated population are unknown. Adverse outcomes in pregnancy occur regardless of the health of the mother or the use of medications. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively.
Data
Animal Data
In embryo-fetal developmental toxicity studies, glasdegib was orally administered to pregnant rats and rabbits at doses up to 100 mg/kg/day during the period of organogenesis. Glasdegib resulted in embryo-fetal lethality (e.g., increased postimplantation loss and decreased numbers of live fetuses) in rats and rabbits at 50 mg/kg/day and 5 mg/kg/day, respectively, at maternal exposures approximately 4-times and 3-times the human exposure at the recommended dose [based on Cmax (rat) and AUC (rabbit)]. Doses of ≥10 mg/kg in rat [approximately 0.6-times the human exposure (Cmax) at the recommended dose] and ≥5 mg/kg in rabbit resulted in fetal developmental abnormalities and malformations consisting of craniofacial malformations, malformed limbs, paws/digits, trunk and tail, dilation of brain, malpositioned/malformed eyes, misshapen head, small tongue, absent palate, teeth and viscera, diaphragmatic hernia, edema, heart defects, rib and vertebral abnormalities, malformed or absent structures in the appendicular skeleton.
Lactation
Risk Summary
There are no data on the presence of glasdegib or its active metabolites in human milk, the effects of the drug on the breastfed child, or its effect on milk production. Because of the potential for serious adverse reactions in a breastfed child from DAURISMO, advise women who are taking DAURISMO not to breastfeed or provide breast milk to infants or children during treatment with DAURISMO and for at least 30 days after the last dose.
Females and Males of Reproductive Potential
DAURISMO can cause fetal harm when administered to a pregnant woman [see Use in Specific Populations (8.1)].
Pregnancy Testing
Conduct pregnancy testing in females of reproductive potential within 7 days prior to initiating therapy with DAURISMO.
Contraception
Females
Advise females of reproductive potential to use effective contraception during treatment with DAURISMO and at least 30 days after the last dose.
Males
It is not known if glasdegib is present in semen. Advise males of the potential risk of exposure through semen and to use effective contraception, including a condom, even after a vasectomy, to avoid drug exposure to a pregnant partner or a female partner of reproductive potential during treatment with DAURISMO and for at least 30 days after the last dose. Advise males to not donate semen during treatment with DAURISMO for at least 30 days after the last dose [see Nonclinical Toxicology (13.1)].
Infertility
Males
Based on findings in repeat-dose animal toxicity studies in rats, DAURISMO may impair fertility in males of reproductive potential. Some effects on male reproductive organs did not recover [see Nonclinical Toxicology (13.1)]. Men should seek advice on effective fertility preservation before treatment.
Pediatric Use
The safety and effectiveness of DAURISMO have not been established in pediatric patients. In repeat-dose toxicity studies in rats, oral administration of DAURISMO resulted in adverse changes in growing bone, teeth, and testis. Effects on bone consisted of partial to complete closure of the epiphyseal plate. Effects in growing incisor teeth included degeneration/necrosis of ameloblasts, and complete tooth loss with oral ulceration. Reproductive tissue toxicity was evidenced by testicular degeneration and hypospermatogenesis. These effects in bone, teeth and testis were observed after administration of DAURISMO for 26 weeks at greater than or equal to 50 mg/kg/day corresponding to approximately 6.6-times the steady-state AUC in patients at the recommended human dose.
Geriatric Use
Of the total number of subjects in clinical studies of DAURISMO with low-dose cytarabine (N=88), 98% of the patients were age 65 years or older and 60% of the patients were age 75 years or older. There were insufficient patients younger than age 65 years to determine differences in adverse reactions reported from patients older than 65.
Renal Impairment
No dosage modification is recommended for patients with mild to severe renal impairment (estimated glomerular filtration rate [eGFR] 15 to 89 mL/min). Monitor patients with severe renal impairment (eGFR 15 to 29 mL/min) for increased risk of adverse reactions, including QTc interval prolongation, due to increased glasdegib concentrations [see Clinical Pharmacology (12.3)].
None.