The value of repeat kidney biopsy in lupus nephritis. A systematic review
La utilidad de la biopsia renal repetida en nefritis lúpica. Una revisión sistemática
Rev. colomb. reumatol; 28 (supl.1), 2021
Publication year: 2021
ABSTRACT A renal biopsy is the 'gold standard' for diagnosis and classification of lupus nephritis (LN). The role of repeat renal biopsy in lupus nephritis (LN) to guide treatment or predict prognosis has been controversial. A systematic literature review was conducted based on retrospective and prospective studies. The studies were identified using English electronic scientific databases, including MEDLINE PUBMED, published between January 1990 and August 2020. The eligibility criteria were studies including adult LN patients with at least one follow-up renal biopsy with appropriate longitudinal information. Case reports, studies with incomplete information or including duplicate patients were excluded. Based on the inclusion and exclusion criteria, a total of 73 publications were identified. This study included a total of 1167 repeat biopsies in LN patients from 15 studies. The primary indication for a repeat biopsy was relapse in 44-78% of the cases, and lack of response in 13-51%. Additionally, several repeat biopsies were done according to the protocol, after induction and maintenance therapy. In terms of histopathological class switches, there was a higher frequency of changes from nonproliferative to proliferative lesions. Only two studies provide a definition of histological response. There were often changes in the therapeutic approach after a repeat biopsy. Repeat kidney biopsies are helpful in patients with LN flare/relapse, and in patients with poor treatment response. Histological transformation was a common finding. The histologic and clinical responses are discordant. A repeat biopsy could be of prognostic value for therapeutic decision-making.
RESUMEN La biopsia renal es el «estándar de oro» para el diagnóstico y la clasificación de la nefritis lúpica (NL). El papel de la biopsia renal repetida en nefritis lúpica para orientar el tratamiento o predecir el pronóstico ha sido controversial. Se llevó a cabo una revisión sistemática de la literatura basada en estudios retrospectivos y prospectivos. Los estudios se identificaron a través de bases de datos científicas electrónicas en inglés, incluyendo Medline PubMed, de publicaciones entre enero de 1990 y agosto del 2020. Los criterios de elegibilidad fueron estudios que incluyeran a pacientes adultos con NL, quienes tuvieran al menos una biopsia renal de seguimiento, con información longitudinal apropiada. Se excluyeron informes de casos, estudios con información incompleta o con pacientes duplicados. Basándose en los criterios de inclusión y exclusión, se identificaron 73 publicaciones. En la presente revisión se analizaron un total de 1.167 biopsias repetidas en pacientes con NL en 15 estudios.