Effect of CYP3A5 genotype, steroids, and azoles on tacrolimus in a pediatric renal transplant population

Background Numerous studies have described the impact of cytochrome P450 3A5 ( CYP3A5 ) genotype on Tacrolimus (TAC) exposure. The purpose of this study was to conduct a comprehensive analysis of genetic and non-genetic factors affecting the TAC dose–exposure relationship over the first year post pe...

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Veröffentlicht in:Pediatric nephrology (Berlin, West) West), 2014-10, Vol.29 (10), p.2039-2049
Hauptverfasser: Lalan, Shwetal, Abdel-Rahman, Susan, Gaedigk, Andrea, Leeder, J. Steven, Warady, Bradley A., Dai, Hongying, Blowey, Douglas
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container_end_page 2049
container_issue 10
container_start_page 2039
container_title Pediatric nephrology (Berlin, West)
container_volume 29
creator Lalan, Shwetal
Abdel-Rahman, Susan
Gaedigk, Andrea
Leeder, J. Steven
Warady, Bradley A.
Dai, Hongying
Blowey, Douglas
description Background Numerous studies have described the impact of cytochrome P450 3A5 ( CYP3A5 ) genotype on Tacrolimus (TAC) exposure. The purpose of this study was to conduct a comprehensive analysis of genetic and non-genetic factors affecting the TAC dose–exposure relationship over the first year post pediatric renal transplant. Methods Data were collected retrospectively for the first year post-transplant in pediatric renal transplant patients receiving TAC maintenance immunosuppression. The effect of CYP3A5 genotype ( CYP3A5*3 and *6 alleles), age, azoles, and corticosteroids on TAC trough concentration normalized for dose (TAC Co/D ng/ml/mg/kg/day) was assessed using a linear mixed model. Results Over time, TAC Co/D was lower in recipients with CYP3A5*1/*3 genotype compared to those with CYP3A5*3/*3 genotype (44.5 ± 14.4 vs. 107.6 ± 6.4, p  = 0.03), increased in patients >12 years of age compared to 
doi_str_mv 10.1007/s00467-014-2827-2
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Steven ; Warady, Bradley A. ; Dai, Hongying ; Blowey, Douglas</creator><creatorcontrib>Lalan, Shwetal ; Abdel-Rahman, Susan ; Gaedigk, Andrea ; Leeder, J. Steven ; Warady, Bradley A. ; Dai, Hongying ; Blowey, Douglas</creatorcontrib><description>Background Numerous studies have described the impact of cytochrome P450 3A5 ( CYP3A5 ) genotype on Tacrolimus (TAC) exposure. The purpose of this study was to conduct a comprehensive analysis of genetic and non-genetic factors affecting the TAC dose–exposure relationship over the first year post pediatric renal transplant. Methods Data were collected retrospectively for the first year post-transplant in pediatric renal transplant patients receiving TAC maintenance immunosuppression. The effect of CYP3A5 genotype ( CYP3A5*3 and *6 alleles), age, azoles, and corticosteroids on TAC trough concentration normalized for dose (TAC Co/D ng/ml/mg/kg/day) was assessed using a linear mixed model. Results Over time, TAC Co/D was lower in recipients with CYP3A5*1/*3 genotype compared to those with CYP3A5*3/*3 genotype (44.5 ± 14.4 vs. 107.6 ± 6.4, p  = 0.03), increased in patients &gt;12 years of age compared to &lt; 12 years (93.9 ± 8.7 vs. 53.1 ± 12.9, p  = 0.007), and decreased by concomitant corticosteroids (69.5 ± 12.7 vs. 89.9 ± 20.0, p  = 0.04). The observed increased TAC Co/D in the presence of azoles (271 ± 41 vs. 111 ± 91, p  = 0.016) could be attributed to clotrimazole. Conclusions Multiple factors, including CYP3A5 genotype, and age, influence TAC Co/D in pediatric kidney transplant recipients. Clotrimazole administered as troches also contribute to TAC Co/D variability.</description><identifier>ISSN: 0931-041X</identifier><identifier>EISSN: 1432-198X</identifier><identifier>DOI: 10.1007/s00467-014-2827-2</identifier><identifier>PMID: 24875272</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Adolescent ; Adrenal Cortex Hormones - therapeutic use ; Age ; Age Factors ; Anti-Infective Agents, Local - therapeutic use ; Child ; Child, Preschool ; Clotrimazole - therapeutic use ; Cytochrome ; Cytochrome P-450 CYP3A - genetics ; Dosage and administration ; Drug dosages ; Drug therapy ; Enzymes ; Female ; Genotype ; Genotype &amp; phenotype ; Humans ; Immunosuppressive Agents - blood ; Immunosuppressive Agents - therapeutic use ; Infant ; Influence ; Kidney failure ; Kidney Transplantation ; Kidney transplants ; Kidneys ; Male ; Medicine ; Medicine &amp; Public Health ; Metabolism ; Nephrology ; Original Article ; Patients ; Pediatrics ; Polymorphism, Single Nucleotide ; Retrospective Studies ; Steroids ; Tacrolimus ; Tacrolimus - blood ; Tacrolimus - therapeutic use ; Toxicity ; Transplantation ; Urology ; Young Adult</subject><ispartof>Pediatric nephrology (Berlin, West), 2014-10, Vol.29 (10), p.2039-2049</ispartof><rights>IPNA 2014</rights><rights>COPYRIGHT 2014 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c541t-215e17c965c0d0b69e036dd248b522851c056392f58107149d4f6612cdaf81e03</citedby><cites>FETCH-LOGICAL-c541t-215e17c965c0d0b69e036dd248b522851c056392f58107149d4f6612cdaf81e03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00467-014-2827-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00467-014-2827-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,782,786,27933,27934,41497,42566,51328</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24875272$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lalan, Shwetal</creatorcontrib><creatorcontrib>Abdel-Rahman, Susan</creatorcontrib><creatorcontrib>Gaedigk, Andrea</creatorcontrib><creatorcontrib>Leeder, J. Steven</creatorcontrib><creatorcontrib>Warady, Bradley A.</creatorcontrib><creatorcontrib>Dai, Hongying</creatorcontrib><creatorcontrib>Blowey, Douglas</creatorcontrib><title>Effect of CYP3A5 genotype, steroids, and azoles on tacrolimus in a pediatric renal transplant population</title><title>Pediatric nephrology (Berlin, West)</title><addtitle>Pediatr Nephrol</addtitle><addtitle>Pediatr Nephrol</addtitle><description>Background Numerous studies have described the impact of cytochrome P450 3A5 ( CYP3A5 ) genotype on Tacrolimus (TAC) exposure. The purpose of this study was to conduct a comprehensive analysis of genetic and non-genetic factors affecting the TAC dose–exposure relationship over the first year post pediatric renal transplant. Methods Data were collected retrospectively for the first year post-transplant in pediatric renal transplant patients receiving TAC maintenance immunosuppression. The effect of CYP3A5 genotype ( CYP3A5*3 and *6 alleles), age, azoles, and corticosteroids on TAC trough concentration normalized for dose (TAC Co/D ng/ml/mg/kg/day) was assessed using a linear mixed model. Results Over time, TAC Co/D was lower in recipients with CYP3A5*1/*3 genotype compared to those with CYP3A5*3/*3 genotype (44.5 ± 14.4 vs. 107.6 ± 6.4, p  = 0.03), increased in patients &gt;12 years of age compared to &lt; 12 years (93.9 ± 8.7 vs. 53.1 ± 12.9, p  = 0.007), and decreased by concomitant corticosteroids (69.5 ± 12.7 vs. 89.9 ± 20.0, p  = 0.04). The observed increased TAC Co/D in the presence of azoles (271 ± 41 vs. 111 ± 91, p  = 0.016) could be attributed to clotrimazole. Conclusions Multiple factors, including CYP3A5 genotype, and age, influence TAC Co/D in pediatric kidney transplant recipients. 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Steven</au><au>Warady, Bradley A.</au><au>Dai, Hongying</au><au>Blowey, Douglas</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of CYP3A5 genotype, steroids, and azoles on tacrolimus in a pediatric renal transplant population</atitle><jtitle>Pediatric nephrology (Berlin, West)</jtitle><stitle>Pediatr Nephrol</stitle><addtitle>Pediatr Nephrol</addtitle><date>2014-10-01</date><risdate>2014</risdate><volume>29</volume><issue>10</issue><spage>2039</spage><epage>2049</epage><pages>2039-2049</pages><issn>0931-041X</issn><eissn>1432-198X</eissn><abstract>Background Numerous studies have described the impact of cytochrome P450 3A5 ( CYP3A5 ) genotype on Tacrolimus (TAC) exposure. The purpose of this study was to conduct a comprehensive analysis of genetic and non-genetic factors affecting the TAC dose–exposure relationship over the first year post pediatric renal transplant. Methods Data were collected retrospectively for the first year post-transplant in pediatric renal transplant patients receiving TAC maintenance immunosuppression. The effect of CYP3A5 genotype ( CYP3A5*3 and *6 alleles), age, azoles, and corticosteroids on TAC trough concentration normalized for dose (TAC Co/D ng/ml/mg/kg/day) was assessed using a linear mixed model. Results Over time, TAC Co/D was lower in recipients with CYP3A5*1/*3 genotype compared to those with CYP3A5*3/*3 genotype (44.5 ± 14.4 vs. 107.6 ± 6.4, p  = 0.03), increased in patients &gt;12 years of age compared to &lt; 12 years (93.9 ± 8.7 vs. 53.1 ± 12.9, p  = 0.007), and decreased by concomitant corticosteroids (69.5 ± 12.7 vs. 89.9 ± 20.0, p  = 0.04). The observed increased TAC Co/D in the presence of azoles (271 ± 41 vs. 111 ± 91, p  = 0.016) could be attributed to clotrimazole. Conclusions Multiple factors, including CYP3A5 genotype, and age, influence TAC Co/D in pediatric kidney transplant recipients. Clotrimazole administered as troches also contribute to TAC Co/D variability.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>24875272</pmid><doi>10.1007/s00467-014-2827-2</doi><tpages>11</tpages></addata></record>
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subjects Adolescent
Adrenal Cortex Hormones - therapeutic use
Age
Age Factors
Anti-Infective Agents, Local - therapeutic use
Child
Child, Preschool
Clotrimazole - therapeutic use
Cytochrome
Cytochrome P-450 CYP3A - genetics
Dosage and administration
Drug dosages
Drug therapy
Enzymes
Female
Genotype
Genotype & phenotype
Humans
Immunosuppressive Agents - blood
Immunosuppressive Agents - therapeutic use
Infant
Influence
Kidney failure
Kidney Transplantation
Kidney transplants
Kidneys
Male
Medicine
Medicine & Public Health
Metabolism
Nephrology
Original Article
Patients
Pediatrics
Polymorphism, Single Nucleotide
Retrospective Studies
Steroids
Tacrolimus
Tacrolimus - blood
Tacrolimus - therapeutic use
Toxicity
Transplantation
Urology
Young Adult
title Effect of CYP3A5 genotype, steroids, and azoles on tacrolimus in a pediatric renal transplant population
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