DUVELISIB Drug Interactions: What You Need to Know

INTERACTIONS CYP3A4 inhibitors: Reduce COPIKTRA dose to 15 mg twice daily when co-administered with strong CYP3A4 inhibitors. ( 2.4 , 7.1 , 12.3 ) Strong CYP3A4 inducers: Avoid coadministration. ( 2.5 , 7.1 , 12.3 ) Moderate CYP3A4 inducers: Avoid coadministration. If coadministration cannot be avoided, increase the dose of COPIKTRA. ( 2.5 , 7.1 , 12.3 ) CYP3A4 substrates: Monitor for signs of toxicities when co-administering COPIKTRA with sensitive CYP3A substrates. ( 7.2 )

7.1 Effects of Other Drugs on COPIKTRA Strong CYP3A4 Inhibitors Coadministration with a strong CYP3A4 inhibitor increases duvelisib AUC <span class="opacity-50 text-xs">[see Clinical Pharmacology ( 12.3 )]</span> , which may increase the risk of COPIKTRA toxicities. Reduce COPIKTRA dosage when co-administered with a strong CYP3A4 inhibitor <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.4 )]</span> . Strong and Moderate CYP3A4 Inducers Coadministration with a strong or moderate CYP3A4 inducer decreases duvelisib area under the curve (AUC) <span class="opacity-50 text-xs">[see Clinical Pharmacology ( 12.3 )]</span> , which may reduce COPIKTRA efficacy. Avoid coadministration of strong or moderate CYP3A4 inducers with COPIKTRA. If coadministration with a moderate CYP3A4 inducer cannot be avoided, increase the COPIKTRA dose. <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.5 ), Clinical Pharmacology ( 12.3 )]</span>.

7.2 Effects of COPIKTRA on Other Drugs CYP3A4 Substrates Coadministration with COPIKTRA increases AUC of a sensitive CYP3A4 substrate <span class="opacity-50 text-xs">[see Clinical Pharmacology ( 12.3 )]</span> which may increase the risk of toxicities of these drugs. Consider reducing the dose of the sensitive CYP3A4 substrate and monitor for signs of toxicities of the co-administered sensitive CYP3A4 substrate.

None. None.

AND PRECAUTIONS Hepatotoxicity: Monitor hepatic function. ( 5.6 ) Neutropenia: Monitor blood counts. ( 5.7 ) Embryo-Fetal toxicity: COPIKTRA can cause fetal harm. Advise females of reproductive potential and males with female partners of reproductive potential of potential risk to a fetus and to use effective contraception. ( 5.8 )

5.1 Treatment-related Mortality In a randomized controlled study in patients with relapsed or refractory CLL or SLL, treatment with COPIKTRA caused increased treatment-related mortality <span class="opacity-50 text-xs">[see Clinical Studies ( 14 )]</span> . With extended follow-up with a median of 63 months, treatment-related deaths occurred in 15% (23/158) of those patients in the overall population. In the indicated patient population, patients with relapsed or refractory CLL or SLL after at least two prior lines of systemic therapy, treatment-related deaths following treatment with COPIKTRA occurred in 14% (13/93) of patients. The most common cause of the treatment-related deaths were infections, which occurred in 9% and 11% of patients with relapsed or refractory CLL following at least one or two prior systemic therapies, respectively <span class="opacity-50 text-xs">[see Adverse Reactions ( 6.1 )]</span> . COPIKTRA is not indicated and is not recommended for any patients in the initial or second-line treatment setting <span class="opacity-50 text-xs">[see Indications and Usage ( 1 )]</span> .

5.2 Infections Serious, including fatal (18/442; 4%), infections occurred in 31% of patients receiving COPIKTRA 25 mg BID (N = 442). The most common serious infections were pneumonia, sepsis, and lower respiratory infections. Median time to onset of any grade infection was 3 months (range: 1 day to 32 months), with 75% of cases occurring within 6 months. Treat infections prior to initiation of COPIKTRA. Advise patients to report any new or worsening signs and symptoms of infection. For grade 3 or higher infection, withhold COPIKTRA until infection has resolved. Resume COPIKTRA at the same or reduced dose <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.3 )]</span> . Serious, including fatal, Pneumocystis jirovecii pneumonia (PJP) occurred in 1% of patients taking COPIKTRA. Provide prophylaxis for PJP during treatment with COPIKTRA. Following completion of COPIKTRA treatment, continue PJP prophylaxis until the absolute CD4+ T cell count is greater than 200 cells/µL. Withhold COPIKTRA in patients with suspected PJP of any grade, and permanently discontinue if PJP is confirmed. CMV reactivation/infection occurred in 1% of patients taking COPIKTRA. Consider prophylactic antivirals during COPIKTRA treatment to prevent CMV infection including CMV reactivation. For clinical CMV infection or viremia, withhold COPIKTRA until infection or viremia resolves. If COPIKTRA is resumed, administer the same or reduced dose and monitor patients for CMV reactivation by PCR or antigen test at least monthly <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.3 )]</span> .

5.3 Diarrhea or Colitis Serious, including fatal (1/442; 0.2%), diarrhea or colitis occurred in 18% of patients receiving COPIKTRA 25 mg BID (N = 442). The median time to onset of any grade diarrhea or colitis was 4 months (range: 1 day to 33 months), with 75% of cases occurring by 8 months. The median event duration was 0.5 months (range: 1 day to 29 months; 75 th percentile: 1 month). Advise patients to report any new or worsening diarrhea. For non-infectious diarrhea or colitis, follow the guidelines below: For patients presenting with mild or moderate diarrhea (Grade 1-2) (i.e., up to 6 stools per day over baseline) or asymptomatic (Grade 1) colitis, initiate supportive care with antidiarrheal agents as appropriate, continue COPIKTRA at the current dose, and monitor the patient at least weekly until the event resolves. If the diarrhea is unresponsive to antidiarrheal therapy, withhold COPIKTRA and initiate supportive therapy with enteric acting steroids (e.g., budesonide). Monitor the patient at least weekly. Upon resolution of the diarrhea, consider restarting COPIKTRA at a reduced dose. For patients presenting with abdominal pain, stool with mucus or blood, change in bowel habits, peritoneal signs, or with severe diarrhea (Grade 3) (i.e., &gt; 6 stools per day over baseline) withhold COPIKTRA and initiate supportive therapy with enteric acting steroids (e.g., budesonide) or systemic steroids. A diagnostic work-up to determine etiology, including colonoscopy, should be performed. Monitor at least weekly. Upon resolution of the diarrhea or colitis, restart COPIKTRA at a reduced dose. For recurrent Grade 3 diarrhea or recurrent colitis of any grade, discontinue COPIKTRA. Discontinue COPIKTRA for life-threatening diarrhea or colitis <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.3 )]</span> .

5.4 Cutaneous Reactions Serious, including fatal (2/442; 0.5%), cutaneous reactions occurred in 5% of patients receiving COPIKTRA 25 mg BID (N = 442). Fatal cases included drug reaction with eosinophilia and systemic symptoms (DRESS) and toxic epidermal necrolysis (TEN). Median time to onset of any grade cutaneous reaction was 3 months (range: 1 day to 29 months, 75th percentile: 6 months), with a median event duration of 1 month (range: 1 day to 37 months, 75th percentile: 2 months). Presenting features for the serious events were primarily described as pruritic, erythematous, or maculo-papular. Less common presenting features include exanthem, desquamation, erythroderma, skin exfoliation, keratinocyte necrosis, and papular rash. Advise patients to report any new or worsening cutaneous reactions. Review all concomitant medications and discontinue any medications potentially contributing to the event. For patients presenting with mild or moderate (Grade 1-2) cutaneous reactions, continue COPIKTRA at the current dose, initiate supportive care with emollients, anti-histamines (for pruritus), or topical steroids, and monitor the patient closely. Withhold COPIKTRA for severe (Grade 3) cutaneous reaction until resolution. Initiate supportive care with steroids (topical or systemic) or anti-histamines (for pruritus). Monitor at least weekly until resolved. Upon resolution of the event, restart COPIKTRA at a reduced dose. Discontinue COPIKTRA if severe cutaneous reaction does not improve, worsens, or recurs. For life-threatening cutaneous reactions, discontinue COPIKTRA. In patients with SJS, TEN, or DRESS of any grade, discontinue COPIKTRA <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.3 )]</span>.

5.5 Pneumonitis Serious, including fatal (1/442; 0.2%), pneumonitis without an apparent infectious cause occurred in 5% of patients receiving COPIKTRA 25 mg BID (N = 442). Median time to onset of any grade pneumonitis was 4 months (range: 9 days to 27 months), with 75% of cases occurring within 9 months). The median event duration was 1 month, with 75% of cases resolving by 2 months. Withhold COPIKTRA in patients who present with new or progressive pulmonary signs and symptoms such as cough, dyspnea, hypoxia, interstitial infiltrates on a radiologic exam, or a decline by more than 5% in oxygen saturation and evaluate for etiology. If the pneumonitis is infectious, patients may be restarted on COPIKTRA at the previous dose once the infection, pulmonary signs and symptoms resolve. For moderate non-infectious pneumonitis (Grade 2), treat with systemic corticosteroids, and resume COPIKTRA at a reduced dose upon resolution. If non-infectious pneumonitis recurs or does not respond to steroid therapy, discontinue COPIKTRA. For severe or life-threatening non-infectious pneumonitis, discontinue COPIKTRA and treat with systemic steroids <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.3 )]</span> .

5.6 Hepatotoxicity Grade 3 and 4 ALT and/or AST elevation developed in 8% and 2%, respectively, in patients receiving COPIKTRA 25 mg BID (N = 442). Two percent of patients had both an ALT or AST greater than 3 x ULN and total bilirubin greater than 2 x ULN. Median time to onset of any grade transaminase elevation was 2 months (range: 3 days to 26 months), with a median event duration of 1 month (range: 1 day to 16 months). Monitor hepatic function during treatment with COPIKTRA.

For Grade

2 ALT/AST elevation (greater than 3 to 5 × ULN), maintain COPIKTRA dose and monitor at least weekly until return to less than 3 × ULN.

For Grade

3 ALT/AST elevation (greater than 5 to 20 × ULN), withhold COPIKTRA and monitor at least weekly until return to less than 3 × ULN. Resume COPIKTRA at the same dose (first occurrence) or at a reduced dose for subsequent occurrence. For grade 4 ALT/AST elevation (greater than 20 × ULN) discontinue COPIKTRA [see Dosage and Administration ( 2.3 )] .

5.7 Neutropenia Grade 3 or 4 neutropenia occurred in 42% of patients receiving COPIKTRA 25 mg BID (N = 442), with Grade 4 neutropenia occurring in 24% of all patients. The median time to onset of Grade ≥ 3 neutropenia was 2 months (range: 3 days to 31 months), with 75% of cases occurring within 4 months. Monitor neutrophil counts at least every 2 weeks for the first 2 months of COPIKTRA therapy, and at least weekly in patients with neutrophil counts &lt;

1.0 Gi/L (Grade 3-4). Withhold COPIKTRA in patients presenting with neutrophil counts &lt;

0.5 Gi/L (Grade 4). sMonitor until ANC is &gt;

0.5 Gi/L, resume COPIKTRA at same dose for the first occurrence or a reduced dose for subsequent occurrence <span class="opacity-50 text-xs">[see Dosage and Administration ( 2.3 )]</span> .

5.8 Embryo-fetal Toxicity Based on findings in animals and its mechanism of action, COPIKTRA can cause fetal harm when administered to a pregnant woman. In animal reproduction studies, administration of duvelisib to pregnant rats and rabbits during organogenesis caused adverse developmental outcomes including embryo-fetal mortality (resorptions, post-implantation loss, and decreased viable fetuses), alterations to growth (lower fetal weights) and structural abnormalities (malformations) at maternal doses approximately 10 times and 39 times the maximum recommended human dose (MRHD) of 25 mg BID in rats and rabbits, respectively . Advise pregnant women of the potential risk to a fetus. Advise females of reproductive potential and males with female partners of reproductive potential to use effective contraception during treatment and for 1 month after the last dose <span class="opacity-50 text-xs">[see Use in Specific Populations ( 8.1 , 8.3 ) and Clinical Pharmacology ( 12.1 , 12.3 )]</span>.