NUDT15 is a key genetic factor for prediction of hematotoxicity in pediatric patients who received a standard low dosage regimen of 6-mercaptopurine

Author(s):  
Kanyarat Khaeso ◽  
Patcharee Komwilaisak ◽  
Su-on Chainansamit ◽  
Nontaya Nakkam ◽  
Kunanya Suwannaying ◽  
...  
1975 ◽  
Vol 34 (5) ◽  
pp. 416-421 ◽  
Author(s):  
A J Dixon ◽  
J Davies ◽  
T L Dormandy ◽  
E B Hamilton ◽  
P J Holt ◽  
...  

1963 ◽  
Vol 90 (1) ◽  
pp. 102-106 ◽  
Author(s):  
Donald M. Gleason ◽  
Amir S. Girgis ◽  
John K. Lattimer

2007 ◽  
Vol 2 (3) ◽  
pp. 267-269
Author(s):  
Marcia Ramos-e-Silva ◽  
Sueli Coelho da Silva Carneiro

2013 ◽  
Vol 18 (3) ◽  
pp. 209-219 ◽  
Author(s):  
Mallika Lala ◽  
Gilbert J. Burckart ◽  
Cheryl M. Takao ◽  
Vera Pravica ◽  
Jeremiah D. Momper ◽  
...  

BACKGROUND Warfarin dosage regimens using CYP2C9 and VKORC1 polymorphisms have been extensively studied in adults and is included in US Food and Drug Administration-approved warfarin labeling. However, no dosage algorithm is available for pediatric patients. OBJECTIVE To derive a genetics-based pediatric dosge regimen for warfarin, including starting dose and titration scheme. METHODS A model-based approach was developed based on a previously validated warfarin dosage model in adults, with subsequent comparison to pediatric data from pediatric warfarin dose, genotyping, and international normalized ratio (INR) results. The adult model was based on a previously established model from the CROWN (CReating an Optimal Warfarin dosing Nomogram) trial. Pediatric warfarin data were obtained from a study conducted at the Children’s Hospital of Los Angeles with 26 subjects. Variant alleles of CYP2C9 (rs1799853 or *2, and rs1057910 or *3) and the VKORC1 single nucleotide polymorphism (SNP) rs9923231 (−1639 G>A) were assessed, where the rs numbers are reference SNP identification tags assigned by the National Center for Biotechnology Information. RESULTS A pediatric warfarin model was derived using the previously validated model and clinical pharmacology considerations. The model was validated, and clinical trial simulation and stochastic modeling were used to optimize pediatric dosage and titration. The final dosage regimen was optimized based on simulations targeting a high (≥60%) proportion of INRs within the therapeutic range by week 2 of warfarin therapy while minimizing INRs >3.5 or <2. CONCLUSIONS The proposed pediatric warfarin dosage scheme based on individual CYP2C9 (alleles *1,*2,*3) and VKORC1 rs9923231 (-1639 G>A) genotypes may offer improved dosage compared to current treatment strategies, especially in patients with variant CYP2C9 and VKORC1 alleles. This pilot study provides the foundation for a larger prospective evaluation of genetics-based warfarin dosage in pediatric patients.


2011 ◽  
Vol 26 (5) ◽  
pp. 523-531 ◽  
Author(s):  
Yuka Ohata ◽  
Yoshiko Tomita ◽  
Mitsunobu Nakayama ◽  
Tsuneo Kozuki ◽  
Keisuke Sunakawa ◽  
...  

2020 ◽  
Vol 25 (2) ◽  
pp. 81-95
Author(s):  
Amanda C. Capino ◽  
Amber N. Thomas ◽  
Samantha Baylor ◽  
Kaitlin M. Hughes ◽  
Jamie L. Miller ◽  
...  

OBJECTIVES To describe the antipsychotics, route of administration, dosage regimen, and outcomes reported to prevent or treat delirium in hospitalized children. METHODS Medline, Embase, and International Pharmaceutical Abstracts were searched using the keywords “haloperidol,” “olanzapine,” “quetiapine,” “risperidone,” “ziprasidone,” and “delirium.” Articles evaluating the use of these agents to manage delirium in hospitalized children that were published between 1946 and August 2019 were included. Two authors independently screened each article for inclusion. Reports were excluded if they were published abstracts or included fewer than 3 patients in the report. RESULTS Thirteen reports that included 370 children receiving haloperidol, quetiapine, olanzapine, and/or risperidone for delirium treatment were reviewed. Most children received haloperidol (n = 131) or olanzapine (n = 125). Significant variability in dosing was noted. A total of 23 patients (6.2%) had an adverse drug event, including 13 (56.5%) who experienced dystonia and 3 (13.0%) with a prolonged corrected QT interval. Most reports described improvement in delirium symptoms; however, only 5 reports used a validated screening tool for PICU delirium to evaluate antipsychotic response. CONCLUSIONS Most reports noted efficacy with antipsychotics, but these reports were limited by sample size and lacked a validated PICU delirium tool. Future research is needed to determine the optimal agent and dosage regimen to treat PICU delirium.


1995 ◽  
Vol 27 (6) ◽  
pp. 322-329 ◽  
Author(s):  
Florence Malet ◽  
Joseph Colin ◽  
Arthur Jauch ◽  
Marie-Louise Abalain

2020 ◽  
Vol 7 (3) ◽  
pp. 53-56
Author(s):  
Carlos Cuenca-Barrales ◽  
José Aneiros-Fernández ◽  
Israel Pérez-López ◽  
Julia Rodríguez-Pérez ◽  
Ricardo Ruiz-Villaverde ◽  
...  

Keloids are a difficult-to-treat disease characterized by an imbalance in mechanisms of tissue reparation. We present the case of a middle-aged woman with spontaneous keloids which histologically and clinically improved after UVA-1 phototherapy treatment. There are few reported cases of keloids treated with high doses of UVA-1 phototherapy. We used a low-dosage regimen with a good response in only one cycle, which could diminish the risk of skin cancer development.


2019 ◽  
pp. 216847901986409
Author(s):  
Priya M. Gadge ◽  
Prathmesh P. Kenjale ◽  
Varsha B. Pokharkar ◽  
Vinod L. Gaikwad

The purpose of the present review is to summarize the current pediatric regulatory requirements and also the regulatory efforts that need to be taken for the potential benefits of safety and efficacy to the pediatric patients. The importance of pediatric regulations came into existence as adult physiological conditions differ from that of children; therefore, the same dosage regimen cannot be recommended for both. Children deviate from adults with respect to pharmacokinetic and pharmacodynamic characteristics, and hence the effect of the drug has to be reconfirmed for pediatrics. Drugs used in pediatric clinics are often considered as “therapeutic orphans” throughout the world as they are difficult to develop and are not provided with sufficient information. The number of clinical trials performed in children is not sufficient. At present, laws and regulations aimed at drug development in the pediatric field have not been focused significantly. There are different regulatory bodies that administrate the pediatric regulations for a particular region.


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