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Inicio Medicina Clínica (English Edition) Clinical characteristics of membranous nephropathy with spontaneous remission: A...
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Vol. 160. Issue 10.
Pages 421-427 (May 2023)
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Vol. 160. Issue 10.
Pages 421-427 (May 2023)
Original article
Clinical characteristics of membranous nephropathy with spontaneous remission: An analysis of 24 patients
Características clínicas de la nefropatía membranosa con remisión espontánea: análisis de 24 pacientes
Xu Wanga,1, Jiao Zhanga,b,1, Gu-ming Zoua, Xu-min Zhenga, Jia-yi Lia, Hong-mei Gaoa, Shi-min Jianga, Wen-ge Lia,
Corresponding author
wenge_lee2002@126.com

Corresponding author.
a Department of Nephrology, China-Japan Friendship Hospital, Beijing 100029, China
b Beijing University of Chinese Medicine, Beijing 100029, China
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Tables (3)
Table 1. General data of the patients with spontaneous remission in PLA2R associated membranous nephropathy (sort by age).
Table 2. The outcomes of patients with spontaneous remission in PLA2R associated membranous nephropathy.
Table 3. Reports in literatures of patients with spontaneous remission of PLA2R associated membranous nephropathy.
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Abstract
Purpose

To investigate the prognosis of patients with spontaneous remission (SR) of phospholipase A2 receptor (PLA2R)-associated membranous nephropathy (MN).

Patients and methods

Patients diagnosed with MN were recruited after examining their renal biopsy in the Renal Department of China-Japan Friendship Hospital between January 2015 and September 2021. Among them, 24 patients with SR were included in this study and follow-up.

Results

Twenty-four patients diagnosed with SR of PLA2R-associated MN were recruited; 11 were male, and 13 were female, with a mean age of 49.5±14.5 years (range, 30–77 years). The initial 24-hour urinary total protein and serum albumin levels were 0.29±0.14g/d and 37.5±4.4g/L, respectively, and the initial serum creatinine was 65.0±15.8μmol/L. During the follow-up of 33.9±19.1 months (range, 6–73 months), 22 (91.7%) patients maintained remission; however, one patient had impaired renal function due to acute coronary syndrome and coronary angiography findings, and one patient experienced a repeated relapse caused by respiratory tract infection, at 50 and 70 months. A systematic review of the relevant literature was conducted, and records of patients with SR of PLA2R-associated MN were retrieved from 16 case reports or case series with a total of 97 cases.

Conclusions

Most patients with SR of MN had a promising long-term prognosis, with only a few cases of relapse.

Keywords:
Membranous nephropathy
Spontaneous remission
Prognosis
Resumen
Objetivo

Investigar el pronóstico de los pacientes con remisión espontánea en la nefropatía membranosa (MN, por sus siglas en inglés) asociada al receptor fosfolipasa A2 (PLA2R).

Pacientes y métodos

Pacientes con MN diagnosticados por biopsia renal en el Departamento Renal del China-Japan Friendship Hospital entre enero de 2015 y septiembre de 2021. Entre ellos, 24 pacientes con remisión espontánea fueron reclutados y seguidos.

Resultados

Se reclutaron 24 pacientes con MN en remisión espontánea asociada a PLA2R; 11 varones y 13 mujeres, con una edad media de 49,5±14,5 años (rango: 30-77 años) en el momento del diagnóstico. La proteína total y la albúmina sérica en orina de 24h iniciales fueron de 0,29±0,14 y 37,5±4,4g/l, respectivamente; la creatinina sérica inicial fue de 65,0±15,8μmol/l. Durante el seguimiento de 33,9±19,1 (rango: 6-73) meses, 22 pacientes (91,7%) mantienen la remisión. Un paciente presentó insuficiencia renal por síndrome coronario agudo y angiografía coronaria. Otro paciente tuvo una recaída causada por una infección del tracto respiratorio 2 veces, a los 50 y 70 meses. Se realizó una revisión sistemática de la literatura. Los pacientes con MN asociada con PLA2R en remisión espontánea se recuperaron en 16 informes o series de casos, de 97 casos en total.

Conclusiones

La mayoría de los pacientes con MN en remisión espontánea tuvieron un pronóstico prometedor a largo plazo, mientras que solo unos pocos casos tuvieron recaída.

Palabras clave:
Nefropatía membranosa
Remisión espontánea
Pronóstico

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