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Remedial Dosing Recommendations for Sirolimus Delayed or Missed Dosages Caused by Poor Medication Compliance in
Yang Yang1, Lei Jiang2, Hai-Rong Zhu3
1Department of Pharmacy, The Affiliated Changzhou Children's Hospital of Nantong University, Changzhou, Jiangsu 213003, China.
Insights
Poor medication compliance in pediatric patients with tuberous sclerosis complex (TSC) can be addressed with specific remedial sirolimus dosages. This study recommends adjusted dosing to maintain therapeutic levels after delayed or missed doses.
Area of Science:
- Pharmacology
- Pediatric Oncology
- Clinical Pharmacy
Background:
- Medication non-compliance, including delayed or missed doses, significantly impacts treatment efficacy in pediatric patients.
- Tuberous sclerosis complex (TSC) management in children often involves sirolimus, requiring precise dosing for optimal outcomes.
Purpose of the Study:
- To evaluate the impact of delayed or missed sirolimus doses on pharmacokinetics (PK) in pediatric TSC patients.
- To establish evidence-based remedial dosing strategies for nonadherent pediatric TSC patients.
Main Methods:
- Utilized a published sirolimus population PK model for pediatric TSC patients.
- Employed Monte Carlo simulations to assess 13 nonadherence scenarios (delayed and missed doses).
- Simulated remedial dosing strategies ranged from 10% to 200% of the scheduled dose.
Main Results:
- Recommended immediate intake of 70%, 60%, 40%, 30%, or 20% of scheduled sirolimus doses for delays of 0-8h, 8-10h, 10-18h, 18-22.7h, and 22.7-24h, respectively.
- For a missed dose, 120% of the scheduled sirolimus dose was recommended at the next administration.
- Identified optimal remedial dosages maximizing the probability of achieving therapeutic drug levels.
Conclusions:
- This study provides the first recommended remedial sirolimus dosages for delayed or missed doses in pediatric TSC patients, based on Monte Carlo simulations.
- Offers a practical solution to improve medication compliance and therapeutic outcomes in this population.
- Highlights the importance of individualized dosing adjustments to maintain sirolimus therapy effectiveness.
Background:
Delayed or missed dosages caused by poor medication compliance significantly affected the treatment of diseases in children.
Aims:
The present study aimed to investigate the influence of delayed or missed dosages on sirolimus pharmacokinetics (PK) in pediatric tuberous sclerosis complex (TSC) patients and to recommend remedial dosages for nonadherent patients.
Methods:
A published sirolimus population PK model in pediatric TSC patients was used to assess the influence of different nonadherence scenarios and recommend optimally remedial dosages based on Monte Carlo simulation. Thirteen nonadherent scenarios were simulated in this study, including delayed 2h, 4 h, 6 h, 8 h, 10 h, 12 h, 14 h, 16 h, 18 h, 20 h, 22 h, 23.5 h, and missed one dosage. Remedial dosing strategies contained 10-200% of scheduled dosages. The optimal remedial dosage was that with the maximum probability of returning the individual therapeutic range.
Results:
For delayed or missed sirolimus dosages in pediatric TSC patients, when the delayed time was 0-8 h, 8-10 h, 10-18 h, 18-22.7 h, 22.7-24 h, 70%, 60%, 40%, 30%, 20% scheduled dosages were recommended to take immediately. When one dosage was missed, 120% of scheduled dosages were recommended at the next dose.
Conclusion:
It was the first time to recommend remedial dosages for delayed or missed sirolimus therapy caused by poor medication compliance in pediatric TSC patients based on Monte Carlo simulation. Meanwhile, the present study provided a potential solution for delayed or missed dosages in clinical practice.
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