Unknown

Dataset Information

0

A Prospective International Study on Adherence to Treatment in 305 Patients With Flaring SLE: Assessment by Drug Levels and Self-Administered Questionnaires.


ABSTRACT: Nonadherence to treatment is a major cause of lupus flares. Hydroxychloroquine (HCQ), a major medication in systemic lupus erythematosus, has a long half-life and can be quantified by high-performance liquid chromatography. This international study evaluated nonadherence in 305 lupus patients with flares using drug levels (HCQ <200?ng/ml or undetectable desethylchloroquine), and self-administered questionnaires (MASRI <80% or MMAS-8 <6). Drug levels defined 18.4% of the patients as severely nonadherent. In multivariate analyses, younger age, nonuse of steroids, higher body mass index, and unemployment were associated with nonadherence by drug level. Questionnaires classified 39.9% of patients as nonadherent. Correlations between adherence measured by questionnaires, drug level, and physician assessment were moderate. Both methods probably measured two different patterns of nonadherence: self-administered questionnaires mostly captured relatively infrequently missed tablets, while drug levels identified severe nonadherence (i.e., interruption or erratic tablet intake). The frequency with which physicians miss nonadherence, together with underreporting by patients, suggests that therapeutic drug monitoring is useful in this setting. (Trial registration: ClinicalTrials.gov: NCT01509989.).

SUBMITTER: Costedoat-Chalumeau N 

PROVIDER: S-EPMC5858989 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

altmetric image

Publications

A Prospective International Study on Adherence to Treatment in 305 Patients With Flaring SLE: Assessment by Drug Levels and Self-Administered Questionnaires.

Costedoat-Chalumeau Nathalie N   Houssiau Frédéric F   Izmirly Peter P   Le Guern Véronique V   Navarra Sandra S   Jolly Meenakshi M   Ruiz-Irastorza Guillermo G   Baron Gabriel G   Hachulla Eric E   Agmon-Levin Nancy N   Shoenfeld Yehuda Y   Dall'Ara Francesca F   Buyon Jill J   Deligny Christophe C   Cervera Ricard R   Lazaro Estibaliz E   Bezanahary Holy H   Leroux Gaëlle G   Morel Nathalie N   Viallard Jean-François JF   Pineau Christian C   Galicier Lionel L   Van Vollenhoven Ronald R   Tincani Angela A   Nguyen Hanh H   Gondran Guillaume G   Zahr Noel N   Pouchot Jacques J   Piette Jean-Charles JC   Petri Michelle M   Isenberg David D  

Clinical pharmacology and therapeutics 20171109 6


Nonadherence to treatment is a major cause of lupus flares. Hydroxychloroquine (HCQ), a major medication in systemic lupus erythematosus, has a long half-life and can be quantified by high-performance liquid chromatography. This international study evaluated nonadherence in 305 lupus patients with flares using drug levels (HCQ <200 ng/ml or undetectable desethylchloroquine), and self-administered questionnaires (MASRI <80% or MMAS-8 <6). Drug levels defined 18.4% of the patients as severely nona  ...[more]

Similar Datasets

| S-EPMC8291325 | biostudies-literature
| S-EPMC6607524 | biostudies-literature
| S-EPMC3935217 | biostudies-literature
| S-EPMC8108392 | biostudies-literature
| S-EPMC6143376 | biostudies-literature
| S-EPMC5807794 | biostudies-literature
| S-EPMC26571 | biostudies-literature
| S-EPMC6407805 | biostudies-literature
| S-EPMC6097429 | biostudies-literature
| S-EPMC5972568 | biostudies-literature