Evidence map›Paper›PMID 26415960›Full record

ArticleClinical and experimental nephrology2016

Tonsillectomy reduces recurrence of IgA nephropathy in mesangial hypercellularity type categorized by the Oxford classification.

Keita Hirano, Hoichi Amano, Tetsuya Kawamura, Kyoko Watanabe, Kentaro Koike, Akihiro Shimizu, Satoshi Endo, Nobuo Tsuboi, Hideo Okonogi, Yoichi Miyazaki and 5 more

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in Clinical and experimental nephrology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 27% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 2 institutions in 1 country.

Keita HiranoDivision of Nephrology, Department of Internal Medicine, Ashikaga Red Cross Hospital, 284-1 Yobe-cho, Ashikaga, Tochigi, 326-0843, Japan. khirano@jikei.ac.jp.
Hoichi AmanoDivision of Nephrology, Department of Internal Medicine, Ashikaga Red Cross Hospital, 284-1 Yobe-cho, Ashikaga, Tochigi, 326-0843, Japan.
Tetsuya KawamuraDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Kyoko WatanabeDivision of Nephrology, Department of Internal Medicine, Ashikaga Red Cross Hospital, 284-1 Yobe-cho, Ashikaga, Tochigi, 326-0843, Japan.
Kentaro KoikeDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Akihiro ShimizuDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Satoshi EndoDivision of Nephrology, Department of Internal Medicine, Ashikaga Red Cross Hospital, 284-1 Yobe-cho, Ashikaga, Tochigi, 326-0843, Japan.
Nobuo TsuboiDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Hideo OkonogiDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Yoichi MiyazakiDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Masato IkedaDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Kazushige HanaokaDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Makoto OguraDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Satoru KomatsumotoDivision of Nephrology, Department of Internal Medicine, Ashikaga Red Cross Hospital, 284-1 Yobe-cho, Ashikaga, Tochigi, 326-0843, Japan.
Takashi YokooDivision of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Minato, Tokyo, Japan.
Jikei University School of Medicine · JPAshikaga Red Cross Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn patients with IgA nephropathy (IgAN), recurrence after steroid pulse therapy is associated with reduced renal survival. However, the predictors of recurrence have not yet been clarified.

methodsAll patients who received 6-month steroid pulse therapy from 2004 to 2010 in our four affiliated hospitals and achieved a reduction of proteinuria to <0.4 g/day 1 year after treatment were retrospectively evaluated. The primary outcome was proteinuria ≥1.0 g/day during follow-up or additional antiproteinuric therapy. Two histological classifications were evaluated, the Oxford Classification with a split system and Japanese histological grades (HGs) with a lumped system.

resultsDuring a median follow-up of 3.4 years, 27 (26.7 %) of the 101 patients showed recurrence. Multivariate analysis showed that HG was the only significant predictor of recurrence, with HG 2+3+4 vs HG 1 having a hazard ratio of 7.38 (95 % confidence interval 1.52-133). Furthermore, in patients with mesangial hypercellularity according to the Oxford Classification, cumulative rate of recurrence-free survival was greater in patients with steroid therapy plus tonsillectomy compared with those who received steroid therapy alone (Log-rank test, P = 0.022). However, this association was not observed in patients without mesangial hypercellularity.

conclusionsHG is a novel predictor of recurrence after steroid pulse therapy in patients with IgAN. Moreover, the combination of steroid pulse therapy plus tonsillectomy may indicate a lower risk of recurrence in patients with mesangial hypercellularity, as defined by the Oxford Classification.

Indexed as

Cell ProliferationTonsillectomyAdultBiopsyCombined Modality TherapyDisease-Free SurvivalFemaleGlomerular MesangiumGlomerulonephritis, IGAHumansJapanKaplan-Meier EstimateMaleProteinuriaPulse Therapy, DrugRecurrenceSteroidsCorticosteroid therapyHistological gradeIgA/C3 ratioMesangial hypercellularityThe Oxford classificationTonsillectomy

Identifiers

PMID26415960
PMCPMC4891371
OpenAlexW2195480456

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.