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  1. Article ; Online: Identification of Medication-Related Risks in Bariatric Surgery Patients by Performing Structured Medication Reviews.

    Böhm, Doortje T M M / Berghuis, Kim / Said, Mohammed / Kerskes, Marieke C H M / Deenen, Maarten J / Bastiaans, Diane E T

    Obesity surgery

    2023  Volume 33, Issue 12, Page(s) 3932–3937

    Abstract: Purpose: More medication-related issues are seen with the growing demand for bariatric surgery, because of possible altered pharmacokinetics after surgery. Collaboration with a pharmacist could improve the short- and long-term safety and efficacy of ... ...

    Abstract Purpose: More medication-related issues are seen with the growing demand for bariatric surgery, because of possible altered pharmacokinetics after surgery. Collaboration with a pharmacist could improve the short- and long-term safety and efficacy of pharmacotherapy in patients undergoing bariatric surgery. The aim of this study was to evaluate the impact of a structured medication review to identify medication-related risks before bariatric surgery.
    Materials and methods: The impact on pharmacy-led interventions of introducing a structured medication review was evaluated in a historically controlled study. In the retrospective part, we evaluated patient characteristics, medication use, and number of pre-surgery consultations with a pharmacist before the introduction of medication reviews. A flowchart was developed to detect the use of medicines with risks associated with bariatric surgery. In the prospective part, we evaluated pharmacy-led interventions after the introduction of structured medication reviews using the flowchart. Outcome effectiveness was measured through the number of pre-surgery pharmacy-led interventions.
    Results: Before using the flowchart for screening on risk medicines, 40 (2.6%) pharmacy-led interventions were identified in 1536 patients. In the prospective group, 195 patients were included and 88 (45%) interventions were identified (p < 0.001).
    Conclusion: A structured medication review before bariatric surgery significantly increased the number of pharmacy-led interventions in bariatric surgery patients. This procedure will shift interventions to pre-surgery instead of post-surgery, contributing to the optimization of pharmacotherapy at an early stage.
    MeSH term(s) Humans ; Medication Review ; Retrospective Studies ; Obesity, Morbid/surgery ; Bariatric Surgery ; Pharmaceutical Services
    Language English
    Publishing date 2023-10-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1070827-3
    ISSN 1708-0428 ; 0960-8923
    ISSN (online) 1708-0428
    ISSN 0960-8923
    DOI 10.1007/s11695-023-06889-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: UGT1A1

    Peeters, Sofía Lj / Deenen, Maarten J / Thijs, Anna Mj / Hulshof, Emma C / Mathijssen, Ron Hj / Gelderblom, Hans / Guchelaar, Henk-Jan / Swen, Jesse J

    Pharmacogenomics

    2023  Volume 24, Issue 8, Page(s) 435–439

    Abstract: Tweetable abstract ... ...

    Abstract Tweetable abstract Pretreatment
    MeSH term(s) Humans ; Irinotecan/adverse effects ; Camptothecin/adverse effects ; Patient Safety ; Genotype ; Neoplasms/drug therapy ; Glucuronosyltransferase/genetics
    Chemical Substances Irinotecan (7673326042) ; Camptothecin (XT3Z54Z28A) ; Glucuronosyltransferase (EC 2.4.1.17)
    Language English
    Publishing date 2023-07-20
    Publishing country England
    Document type Editorial
    ZDB-ID 2019513-8
    ISSN 1744-8042 ; 1462-2416
    ISSN (online) 1744-8042
    ISSN 1462-2416
    DOI 10.2217/pgs-2023-0096
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A Nomogram to Predict Severe Toxicity in DPYD Wild-Type Patients Treated With Capecitabine-Based Anticancer Regimens.

    Knikman, Jonathan E / Lopez-Yurda, Marta / Meulendijks, Didier / Deenen, Maarten J / Schellens, Jan H M / Beijnen, Jos / Cats, Annemieke / Guchelaar, Henk-Jan

    Clinical pharmacology and therapeutics

    2023  Volume 115, Issue 2, Page(s) 269–277

    Abstract: DPYD-guided dosing has improved the safety of fluoropyrimidine-based chemotherapy in recent years. However, severe toxicity remains in ~ 23% of patients not carrying DPYD variant alleles treated with capecitabine. Therefore, we developed a predictive ... ...

    Abstract DPYD-guided dosing has improved the safety of fluoropyrimidine-based chemotherapy in recent years. However, severe toxicity remains in ~ 23% of patients not carrying DPYD variant alleles treated with capecitabine. Therefore, we developed a predictive model based on patient-related and treatment-related factors aimed at estimating the risk of developing severe capecitabine-related toxicity. The nomogram was developed using data from two large clinical trials (NCT00838370 and NCT02324452). Patients with cancer carrying a DPYD variant allele (DPYD*2A, c.1236G>A, c.2846A>T, and c.1679T>G) were excluded. Univariable and multivariable logistic regression using predetermined predictors based on previous findings, including age, sex, body surface area, type of treatment regimen, and creatinine levels were used to develop the nomogram. The developed model was internally validated using bootstrap resampling and cross-validation. This model was not externally or clinically validated. A total of 2,147 DPYD wild-type patients with cancer treated with capecitabine-based chemotherapy regimens were included of which complete data of 1,745 patients were available and used for the development of the nomogram. Univariable and multivariable logistic regression showed that age, sex, and type of treatment regimen were strong predictors of severe capecitabine-related toxicity in DPYD wild-type patients. Internal validation demonstrated a concordance index of 0.68 which indicates a good discriminative ability for prediction of severe capecitabine-related toxicity. The developed nomogram includes readily available parameters and may be a helpful tool for clinicians to assess the risk of developing severe capecitabine-related toxicity in patients without known risk DPYD variant alleles treated with capecitabine-based anticancer regimens.
    MeSH term(s) Humans ; Capecitabine/adverse effects ; Fluorouracil/adverse effects ; Antimetabolites, Antineoplastic/adverse effects ; Nomograms ; Dihydrouracil Dehydrogenase (NADP)/genetics ; Neoplasms/drug therapy ; Neoplasms/genetics ; Neoplasms/chemically induced ; Genotype
    Chemical Substances Capecitabine (6804DJ8Z9U) ; Fluorouracil (U3P01618RT) ; Antimetabolites, Antineoplastic ; Dihydrouracil Dehydrogenase (NADP) (EC 1.3.1.2)
    Language English
    Publishing date 2023-11-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123793-7
    ISSN 1532-6535 ; 0009-9236
    ISSN (online) 1532-6535
    ISSN 0009-9236
    DOI 10.1002/cpt.3100
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Is vancomycin clearance really correlated with hemoglobin? Arguments that it's not.

    Deenen, Maarten J / Ter Heine, Rob

    European journal of clinical pharmacology

    2019  Volume 75, Issue 11, Page(s) 1617–1618

    MeSH term(s) Hemoglobins ; Humans ; Kinetics ; Sepsis ; Vancomycin
    Chemical Substances Hemoglobins ; Vancomycin (6Q205EH1VU)
    Language English
    Publishing date 2019-07-27
    Publishing country Germany
    Document type Letter ; Comment
    ZDB-ID 121960-1
    ISSN 1432-1041 ; 0031-6970
    ISSN (online) 1432-1041
    ISSN 0031-6970
    DOI 10.1007/s00228-019-02724-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Pre-therapeutic UGT1A1 genotyping to reduce the risk of irinotecan-induced severe toxicity: Ready for prime time.

    Hulshof, Emma C / Deenen, Maarten J / Guchelaar, Henk-Jan / Gelderblom, Hans

    European journal of cancer (Oxford, England : 1990)

    2020  Volume 141, Page(s) 9–20

    Abstract: Background: Pre-therapeutic UGT1A1 genotyping is not yet routinely performed in most hospitals in patients starting irinotecan chemotherapy. The aim of this position paper was to evaluate the available evidence and to assess the potential value of ... ...

    Abstract Background: Pre-therapeutic UGT1A1 genotyping is not yet routinely performed in most hospitals in patients starting irinotecan chemotherapy. The aim of this position paper was to evaluate the available evidence and to assess the potential value of genotyping of UGT1A1∗28 and UGT1A1*6 in patients before starting treatment with irinotecan to reduce the risk of severe toxicity.
    Methods: The literature was selected and assessed based on five pre-specified criteria: 1) the level of evidence for associations between UGT1A1 polymorphisms and irinotecan-induced severe toxicity, 2) clinical validity and utility of pre-therapeutic genotyping of UGT1A1, 3) safety and tolerability of irinotecan in carriers of UGT1A1 polymorphisms, 4) availability of specific dose recommendations for irinotecan in carriers of UGT1A1 polymorphisms, 5) evidence of cost benefits of pre-therapeutic genotyping of UGT1A1.
    Results: On all five criteria, study results were favourable for pre-therapeutic genotyping of UGT1A1. A high level of evidence (level I) was found for a higher incidence of irinotecan-induced severe toxicity in homozygous carriers of UGT1A1*28 or UGT1A1*6. The clinical validity and utility of this genetic test proved to be acceptable. Dose-finding studies showed a lower maximum tolerated dose in homozygous variant allele carriers, and most of the drug labels and guidelines recommend a dose reduction of 25-30% in these patients. In addition, pre-therapeutic genotyping of UGT1A1 is likely to save costs.
    Conclusion: Pre-therapeutic genotyping of UGT1A1 in patients initiating treatment with irinotecan improves patient safety, is likely to be cost-saving, and should, therefore, become standard of care.
    MeSH term(s) Antineoplastic Agents/adverse effects ; Drug-Related Side Effects and Adverse Reactions/genetics ; Genotype ; Glucuronosyltransferase/genetics ; Humans ; Irinotecan/adverse effects ; Pharmacogenomic Testing ; Polymorphism, Single Nucleotide
    Chemical Substances Antineoplastic Agents ; Irinotecan (7673326042) ; UGT1A1 enzyme (EC 2.4.1.-) ; Glucuronosyltransferase (EC 2.4.1.17)
    Language English
    Publishing date 2020-10-23
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 82061-1
    ISSN 1879-0852 ; 0277-5379 ; 0959-8049 ; 0964-1947
    ISSN (online) 1879-0852
    ISSN 0277-5379 ; 0959-8049 ; 0964-1947
    DOI 10.1016/j.ejca.2020.09.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: RE: Phase I dose escalation study of oxaliplatin delivered via a laparoscopic approach using pressurized intraperitoneal aerosol chemotherapy (PIPAC) for advanced peritoneal metastases of gastrointestinal tract cancers: PIPAC-oxaliplatin for peritoneal metastases of gastrointestinal cancers.

    Rovers, Koen P / Lurvink, Robin J / Deenen, Maarten J / de Hingh, Ignace H J T

    European journal of cancer (Oxford, England : 1990)

    2021  Volume 147, Page(s) 182–184

    MeSH term(s) Aerosols ; Gastrointestinal Neoplasms ; Humans ; Laparoscopy ; Oxaliplatin ; Peritoneal Neoplasms/drug therapy
    Chemical Substances Aerosols ; Oxaliplatin (04ZR38536J)
    Language English
    Publishing date 2021-02-24
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 82061-1
    ISSN 1879-0852 ; 0277-5379 ; 0959-8049 ; 0964-1947
    ISSN (online) 1879-0852
    ISSN 0277-5379 ; 0959-8049 ; 0964-1947
    DOI 10.1016/j.ejca.2021.01.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Standard-Dose Trifluridine/Tipiracil as Safe Treatment Alternative in Metastatic Colorectal Cancer Patients With DPD Deficiency.

    Schouten, Jeroen F / Willems, Jeroen / Sanders, Stefan J W J / Creemers, Geert-Jan / Deenen, Maarten J

    Clinical colorectal cancer

    2021  Volume 20, Issue 4, Page(s) 359–363

    MeSH term(s) Colonic Neoplasms ; Dihydropyrimidine Dehydrogenase Deficiency ; Humans ; Pyrrolidines ; Rectal Neoplasms ; Thymine ; Trifluridine/adverse effects
    Chemical Substances Pyrrolidines ; tipiracil (NGO10K751P) ; Thymine (QR26YLT7LT) ; Trifluridine (RMW9V5RW38)
    Language English
    Publishing date 2021-09-15
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 2112638-0
    ISSN 1938-0674 ; 1533-0028
    ISSN (online) 1938-0674
    ISSN 1533-0028
    DOI 10.1016/j.clcc.2021.09.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Response to letter entitled re: UGT1A1 genotype-guided dosing of irinotecan: A prospective safety and cost analysis in poor metaboliser patients: Is it time for everyone treated with irinotecan to be tested for UGT1A1 gene polymorphism?

    Hulshof, Emma C / de With, Mirjam / Creemers, Geert-Jan / Guchelaar, Henk-Jan / Mathijssen, Ron Hj / Gelderblom, Hans / Deenen, Maarten J

    European journal of cancer (Oxford, England : 1990)

    2022  Volume 172, Page(s) 231–233

    MeSH term(s) Costs and Cost Analysis ; Genotype ; Glucuronosyltransferase/genetics ; Humans ; Irinotecan ; Polymorphism, Genetic ; Prospective Studies
    Chemical Substances Irinotecan (7673326042) ; Glucuronosyltransferase (EC 2.4.1.17)
    Language English
    Publishing date 2022-07-03
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 82061-1
    ISSN 1879-0852 ; 0277-5379 ; 0959-8049 ; 0964-1947
    ISSN (online) 1879-0852
    ISSN 0277-5379 ; 0959-8049 ; 0964-1947
    DOI 10.1016/j.ejca.2022.05.045
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The Effect of Genotyping on the Number of Pharmacotherapeutic Gene-Drug Interventions in Chronic Kidney Disease Patients.

    Kerskes, Catharina H M / van den Eijnde, Carien J M E / Aarnoudse, Albert-Jan L H J / Grouls, René J E / Deiman, Birgit A L M / Deenen, Maarten J

    Pharmacy (Basel, Switzerland)

    2023  Volume 11, Issue 2

    Abstract: Patients with chronic kidney disease (CKD) stage 3-5 are polypharmacy patients. Many of these drugs are metabolized by cytochrome P450 ( ...

    Abstract Patients with chronic kidney disease (CKD) stage 3-5 are polypharmacy patients. Many of these drugs are metabolized by cytochrome P450 (
    Language English
    Publishing date 2023-04-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2737194-3
    ISSN 2226-4787 ; 2226-4787
    ISSN (online) 2226-4787
    ISSN 2226-4787
    DOI 10.3390/pharmacy11020069
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Genetic Variants in DNA Repair Pathways as Potential Biomarkers in Predicting Treatment Outcome of Intraperitoneal Chemotherapy in Patients With Colorectal Peritoneal Metastasis: A Systematic Review.

    Hulshof, Emma C / Lim, Lifani / de Hingh, Ignace H J T / Gelderblom, Hans / Guchelaar, Henk-Jan / Deenen, Maarten J

    Frontiers in pharmacology

    2020  Volume 11, Page(s) 577968

    Abstract: Background: The introduction of cytoreductive surgery (CRS) followed by hyperthermic intraperitoneal chemotherapy (HIPEC) with either oxaliplatin or mitomycin C for patients with colorectal peritoneal metastasis (CPM) has resulted in a major increase in ...

    Abstract Background: The introduction of cytoreductive surgery (CRS) followed by hyperthermic intraperitoneal chemotherapy (HIPEC) with either oxaliplatin or mitomycin C for patients with colorectal peritoneal metastasis (CPM) has resulted in a major increase in overall survival. Nonetheless, despite critical patient selection, the majority of patients will develop recurrent disease within one year following CRS + HIPEC. Therefore, improvement of patient and treatment selection is needed and may be achieved by the incorporation of genetic biomarkers. This systematic review aims to provide an overview of genetic biomarkers in the DNA repair pathway that are potentially predictive for treatment outcome of patients with colorectal peritoneal metastases treated with CRS + HIPEC with oxaliplatin or mitomycin C.
    Methods: A systematic review was conducted according to the PRISMA guidelines. Given the limited number of genetic association studies of intraperitoneal mitomycin C and oxaliplatin in patients with CPM, we expanded the review and extrapolated the data from biomarker studies conducted in colorectal cancer patients treated with systemic mitomycin C- and oxaliplatin-based chemotherapy.
    Results: In total, 43 papers were included in this review. No study reported potential pharmacogenomic biomarkers in patients with colorectal cancer undergoing mitomycin C-based chemotherapy. For oxaliplatin-based chemotherapy, a total of 26 genetic biomarkers within 14 genes were identified that were significantly associated with treatment outcome. The most promising genetic biomarkers were
    Conclusion: Several genetic biomarkers have proven predictive value for the treatment outcome of systemically administered oxaliplatin. By extrapolation, these genetic biomarkers may also be predictive for the efficacy of intraperitoneal oxaliplatin. This should be the subject of further investigation.
    Language English
    Publishing date 2020-10-06
    Publishing country Switzerland
    Document type Systematic Review
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2020.577968
    Database MEDical Literature Analysis and Retrieval System OnLINE

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