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Efficacy, tolerability, and safety of oral sulfate tablet versus 2 L-polyethylene glycol/ascorbate for bowel preparation in older patients: prospective, multicenter, investigator single-blinded, randomized study

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A Letter to the Editor to this article was published on 02 May 2024

Abstract

Background

We compared the efficacy, tolerability, and safety of oral sulfate tablets (OST, which contains simethicone) and 2 L-polyethylene glycol/ascorbate (2 L-PEG/Asc) with a split-dosing regimen in older individuals aged ≥ 70 years who underwent scheduled colonoscopy.

Methods

This prospective, randomized, investigator-blinded, multicenter study was conducted between June 2022 and October 2023. Participants aged ≥ 70 years were randomized at a ratio of 1:1 to the OST or 2 L-PEG/Asc groups.

Results

In total, 254 patients were evaluated using a modified full analysis set. Successful overall bowel preparation was excellent and similar between the OST and 2 L-PEG/Asc groups for the Boston Bowel Preparation Scale (BBPS) (96.5% vs. 96.6%) and Harefield Cleansing Scale (HCS) (96.5% vs. 97.4%). The overall high-quality preparation rate was higher in the OST group than in the 2 L-PEG/Asc group (BBPS: 55.7% vs. 28.4%, P < 0.001; HCS: 66.1% vs. 38.8%, P < 0.001). The overall adenoma detection rate (54.8% vs. 35.3, P = 0.003) was superior in the OST group compared to the 2 L-PEG/Asc group. Tolerability scores, including overall satisfaction, were generally higher in the OST group than in the 2 L-PEG/Asc group. The incidence of major solicited adverse events was comparable between the two groups (55.7% vs. 68.1, P = 0.051), and there were no clinically significant changes in the serum laboratory profiles on the day of or 7 days after colonoscopy.

Conclusions

OST is an effective and safe low-volume agent for colonoscopy, with better tolerance than 2 L-PEG/Asc, in older individuals aged ≥ 70 years.

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Abbreviations

OST:

Oral sulfate tablet

PEG:

Polyethylene glycol

Asc:

Ascorbate

BBPS:

Boston Bowel Preparation Scale

HCS:

Harefield Cleansing Scale

CRC:

Colorectal cancer

OSS:

Oral sulfate solution

PDR:

Polyp detection rate

ADR:

Adenoma detection rate

AE:

Adverse event

mFAS:

Modified full analysis set

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Acknowledgements

The authors thank the clinical trial department of Pharmbio Korea for their expertise.

Funding

This study was funded by Pharmbio Korea Co., Seoul, Korea; however, clinical trial and manuscript writing were carried out independently.

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Authors and Affiliations

Authors

Contributions

Concept and design: JMC; data acquisition: HSK, SYN, JYY, YJ, GSS, and JMC; statistical analysis: JYY and JMC; drafting and revision of the manuscript: HSK, and JMC. All the authors approved the final manuscript.

Corresponding author

Correspondence to Jae Myung Cha.

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Conflict of interest

All authors declare that they have no conflicts of interest.

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Clinical trial: Trial Registration: Clinical Trials.gov, Registration number (trial ID): NCT05249335.

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Kang, H.S., Na, SY., Yoon, J.Y. et al. Efficacy, tolerability, and safety of oral sulfate tablet versus 2 L-polyethylene glycol/ascorbate for bowel preparation in older patients: prospective, multicenter, investigator single-blinded, randomized study. J Gastroenterol 59, 402–410 (2024). https://doi.org/10.1007/s00535-024-02089-9

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  • DOI: https://doi.org/10.1007/s00535-024-02089-9

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