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A study comparing the safety and preventive effect of standard-dose and low-dose sulfamethoxazole-trimethoprim in patients with interstitial lung disease

A prospective, randomised non-inferiority trial evaluating the efficacy and safety of low-dose Sulfamethoxazole-Trimethoprim prophylaxis for Pneumocystis pneumonia in patients with interstitial lung disease (STILD study) - STILD

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT1011250066
Enrollment
140
Registered
2026-03-13
Start date
2025-07-02
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Interstitial Lung Diseases under systemic steroid therapy

Interventions

This is a single-center, prospective, open-label, two-arm, parallel-group randomized controlled trial. Patients will be allocated by block randomization with predefined stratification factors. Two reg
D015662
Trimethoprim-sulfamethoxazole, TMP-SMX, Dose comparison, Low-dose regimen, Prophylaxis, PCP prophylaxis, Three-times-per-week nonconsecutive, Once-daily continuous

Sponsors

Tanaka Yusuke
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Adults (>20y) with ILD receiving systemic glucocorticoids, written informed consent.

Exclusion criteria

Exclusion criteria: HIV infection; history of transplantation; current malignancy; pregnancy or lactation, or intention to become pregnant during the study period; severe renal impairment (eGFR or creatinine clearance <30 mL/min); prior Pneumocystis jirovecii pneumonia (PCP).

Design outcomes

Primary

MeasureTime frame
Primary outcomes: discontinuation due to adverse events and incidence of grade 3 or higher adverse events according to CTCAE version 5.0 at 1, 3, and 6 months and cumulatively through 12 months.

Secondary

MeasureTime frame
Incidence of PCP; time to discontinuation; incidence of individual AEs; subclinical PCP; all-cause mortality/hospitalization (optional).

Contacts

Public ContactYusuke Tanaka

Sapporo Medical University

tanayou@sapmed.ac.jp+81-11-611-2111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026