Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor
Abstract Background Primaquine, an 8-aminoquinoline with anti-hypnozoite activity against Plasmodium vivax, is metabolized by human cytochrome P450 2D6 (CYP2D6) to its active metabolite. Human CYP2D6 activities may influence the metabolism of primaquine and the risk of experiencing Plasmodium relaps...
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ftdoajarticles:oai:doaj.org/article:73c26837369c45b89e0ad501b07e00f7 2023-05-15T15:17:44+02:00 Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor Nanhua Chen Simone Dowd Michelle L. Gatton Alyson Auliff Michael D. Edstein Qin Cheng 2019-04-01T00:00:00Z https://doi.org/10.1186/s12936-019-2774-2 https://doaj.org/article/73c26837369c45b89e0ad501b07e00f7 EN eng BMC http://link.springer.com/article/10.1186/s12936-019-2774-2 https://doaj.org/toc/1475-2875 doi:10.1186/s12936-019-2774-2 1475-2875 https://doaj.org/article/73c26837369c45b89e0ad501b07e00f7 Malaria Journal, Vol 18, Iss 1, Pp 1-10 (2019) Plasmodium vivax Relapses Primaquine CYP2D6 allele CYP2D6 phenotype CYP2D6 activity score Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2019 ftdoajarticles https://doi.org/10.1186/s12936-019-2774-2 2022-12-31T06:37:45Z Abstract Background Primaquine, an 8-aminoquinoline with anti-hypnozoite activity against Plasmodium vivax, is metabolized by human cytochrome P450 2D6 (CYP2D6) to its active metabolite. Human CYP2D6 activities may influence the metabolism of primaquine and the risk of experiencing Plasmodium relapses following primaquine anti-relapse therapies (PART). In this study, the CYP2D6 profile and its relationship with outcomes of PART in Australian Defence Force (ADF) personnel is retrospectively investigated. Methods Genomic DNA was isolated from stored and de-identified serum or blood samples from ADF personnel deployed on peacekeeping duties to Papua New Guinea (PNG) (1999) and East Timor (1999–2000) who received PART before returning to Australia and after experiencing relapses. CYP2D6 allelic type was determined by PCR and Sanger sequencing. CYP2D6 allele frequency, predicted phenotypes and activity scores were compared among personnel who did not experience P. vivax (ADF-NR, n = 48) and those who experience at least one (ADF-R, n = 109) relapse, as well as between those who experienced 1 (n = 79), 2 (n = 21) and 3–5 (n = 9) relapses within the ADF-R group. Results 16 CYP2D6 alleles were observed in 157 ADF personnel. Alleles *1, *4, *2 and *41 were major alleles (> 5%). The CYP2D6 allele frequency profile in the ADF-NR group matched that of a European population. There was an increased proportion of non-functional CYP2D6 alleles in the ADF-R group compared to the European population and ADF-NR group. However, frequencies of predicted CYP2D6 phenotype and activity score were not different between the ADF-R and ADF-NR groups, nor among sub-groups experiencing multiple relapses within the ADF-R group. Conclusions CYP2D6 phenotype or activity score based on the allele classification was not a major contributor to P. vivax relapse in this ADF cohort. Other factors such as adherence and/or parasite tolerance to primaquine are likely contributing factors to P. vivax relapses in this cohort. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 18 1 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
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Plasmodium vivax Relapses Primaquine CYP2D6 allele CYP2D6 phenotype CYP2D6 activity score Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
spellingShingle |
Plasmodium vivax Relapses Primaquine CYP2D6 allele CYP2D6 phenotype CYP2D6 activity score Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Nanhua Chen Simone Dowd Michelle L. Gatton Alyson Auliff Michael D. Edstein Qin Cheng Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor |
topic_facet |
Plasmodium vivax Relapses Primaquine CYP2D6 allele CYP2D6 phenotype CYP2D6 activity score Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background Primaquine, an 8-aminoquinoline with anti-hypnozoite activity against Plasmodium vivax, is metabolized by human cytochrome P450 2D6 (CYP2D6) to its active metabolite. Human CYP2D6 activities may influence the metabolism of primaquine and the risk of experiencing Plasmodium relapses following primaquine anti-relapse therapies (PART). In this study, the CYP2D6 profile and its relationship with outcomes of PART in Australian Defence Force (ADF) personnel is retrospectively investigated. Methods Genomic DNA was isolated from stored and de-identified serum or blood samples from ADF personnel deployed on peacekeeping duties to Papua New Guinea (PNG) (1999) and East Timor (1999–2000) who received PART before returning to Australia and after experiencing relapses. CYP2D6 allelic type was determined by PCR and Sanger sequencing. CYP2D6 allele frequency, predicted phenotypes and activity scores were compared among personnel who did not experience P. vivax (ADF-NR, n = 48) and those who experience at least one (ADF-R, n = 109) relapse, as well as between those who experienced 1 (n = 79), 2 (n = 21) and 3–5 (n = 9) relapses within the ADF-R group. Results 16 CYP2D6 alleles were observed in 157 ADF personnel. Alleles *1, *4, *2 and *41 were major alleles (> 5%). The CYP2D6 allele frequency profile in the ADF-NR group matched that of a European population. There was an increased proportion of non-functional CYP2D6 alleles in the ADF-R group compared to the European population and ADF-NR group. However, frequencies of predicted CYP2D6 phenotype and activity score were not different between the ADF-R and ADF-NR groups, nor among sub-groups experiencing multiple relapses within the ADF-R group. Conclusions CYP2D6 phenotype or activity score based on the allele classification was not a major contributor to P. vivax relapse in this ADF cohort. Other factors such as adherence and/or parasite tolerance to primaquine are likely contributing factors to P. vivax relapses in this cohort. |
format |
Article in Journal/Newspaper |
author |
Nanhua Chen Simone Dowd Michelle L. Gatton Alyson Auliff Michael D. Edstein Qin Cheng |
author_facet |
Nanhua Chen Simone Dowd Michelle L. Gatton Alyson Auliff Michael D. Edstein Qin Cheng |
author_sort |
Nanhua Chen |
title |
Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor |
title_short |
Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor |
title_full |
Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor |
title_fullStr |
Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor |
title_full_unstemmed |
Cytochrome P450 2D6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in Australian Defence Force personnel deployed to Papua New Guinea and East Timor |
title_sort |
cytochrome p450 2d6 profiles and their relationship with outcomes of primaquine anti-relapse therapy in australian defence force personnel deployed to papua new guinea and east timor |
publisher |
BMC |
publishDate |
2019 |
url |
https://doi.org/10.1186/s12936-019-2774-2 https://doaj.org/article/73c26837369c45b89e0ad501b07e00f7 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 18, Iss 1, Pp 1-10 (2019) |
op_relation |
http://link.springer.com/article/10.1186/s12936-019-2774-2 https://doaj.org/toc/1475-2875 doi:10.1186/s12936-019-2774-2 1475-2875 https://doaj.org/article/73c26837369c45b89e0ad501b07e00f7 |
op_doi |
https://doi.org/10.1186/s12936-019-2774-2 |
container_title |
Malaria Journal |
container_volume |
18 |
container_issue |
1 |
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1766347980365889536 |