Clinical Effectiveness of Tigecycline for Scrub Typhus.

NCT07513103 — Not applicable, Completed, 27 participants, Jin Soo Lee

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Clinical Efficacy Analysis of Drug Use Tigecycline for Re-creation of Antimicrobial Agents for Treatment of Scrub Typhus.

RegistryNCT07513103
StatusCompleted
PhaseNot applicable
Study typeInterventional; randomized, parallel, masking: none, treatment
Enrollment27 (Actual)
SponsorJin Soo Lee (Other); collaborators: Korean Center for Disease Control and Prevention
ConditionsScrub Typhus
Interventionsdoxycycline, Tigecycline (Tygacil) (Drug)
Datesstart 2022-11-19, primary completion 2024-12-10, completion 2025-01-05, first posted 2026-04-06, last updated 2026-08-11
Locations3 sites in South Korea

Related Papers Related Patents Related Grants Related Experts
All trials for Scrub Typhus All trials of doxycycline All trials of Tigecycline (Tygacil)

-Summary

This multicenter, randomized, open-label clinical trial evaluated the efficacy and tolerability of intravenous tigecycline compared with oral doxycycline in adults hospitalized with scrub typhus. Participants were randomly assigned to receive either intravenous tigecycline or oral doxycycline. The primary efficacy outcome was time to defervescence, and tolerability was assessed based on reported adverse events.

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+Arms and interventions

ArmTypeInterventionsDescription
DoxycyclineActive comparatorDrug: doxycyclineParticipants receive oral doxycycline
TigecyclineExperimentalDrug: Tigecycline (Tygacil)Participants receive intravenous tigecycline
  • doxycycline (Drug): Doxycycline 100 mg orally every 12 hours for 7 days.
  • Tigecycline (Tygacil) (Drug): Tigecycline 100 mg intravenously as a loading dose, followed by 50 mg intravenously every 12 hours for 5 days.

+Outcome measures

Primary outcomes

  • Defervescence [from treatment initiation to defervescence, assessed daily through Day 7]: Time from treatment initiation to defervescence, defined as maintenance of body temperature below 37.3°C for at least 48 consecutive hours without antipyretics.

Secondary outcomes

  • Treatment failure [up to 7 days after treatment initiation]: persistence of fever over 3 days after therapy, but no other cause of fever
  • Relapse [up to 30 days after treatment initiation]: relapse on 30th days
  • adverse events [up to 28 days after treatment initiation]: Occurrence of treatment-emergent adverse events

+Eligibility

Sex: All, ages: 19 Years to 100 Years, accepts healthy volunteers

Inclusion Criteria:

* Hospitalization with a fever of 37.5℃ or higher (tympanic temperature measurement standard) and rash or scabs suspected of tsutsugamushi syndrome
* If an infectious disease specialist makes a clinical judgment and diagnoses scrub typhus
* A person who voluntarily decides to participate and agrees in writing to abide by the precautions after hearing a detailed explanation of this clinical study and fully understanding it

Exclusion Criteria:

* Patients with severe complications such as respiratory failure, pneumonia, and encephalitis (researcher determines final exclusion)
* Patients with chronic renal dysfunction
* Underweight people weighing less than 45Kg
* Immunodeficiency: Long-term use of steroids or other immunosuppressive drugs, patients undergoing chemotherapy, etc. (Researcher determines final exclusion)
* Pregnant women
* Women and men of childbearing potential who are planning to become pregnant during the clinical study period and for 3 months after the end of the clinical study, or who are unwilling to use the following appropriate contraceptive methods*

  * Intrauterine device \[IUD (Intrauterine device), barrier contraception method including spermicide (for female contraceptive vaginal diaphragm/vaginal sponge sponge/cervical cap) and double barrier method (for male use) Excluding simultaneous use of condoms and female condoms), sterilization (vasectomy, vasectomy, tubal ligation, etc.)
* If you cannot take the medicine orally
* Patients already using other anti-rickettsial drugs (rifampin, chloramphenicol, macrolides, quinolones, tetracyclines)
* Patients with shock or multiple organ failure requiring vasopressor/vasoconstrictor, impaired consciousness, respiratory failure requiring mechanical ventilation, and renal dysfunction requiring hemodialysis

+Locations (3)

FacilityCityCountryStatus
Dankuk university hospitalCheonan, Chungcheongnam-doSouth Korea
Inha university hospitalIncheonSouth Korea
Gyeonsang National University HospitalJinjuSouth Korea

+Publications

  • Results publication: Im JH, Jang S, Suh YJ, Lee D, Lee KJ, Kim J, Lee SJ, Baek JH, Park YK, Kim E, Lee SM, Lee HJ, Chung MH, Hong KW, Bae IG, Lee JS. Tigecycline versus doxycycline for scrub typhus: a preliminary randomized trial. Trop Med Health. 2026 Sep 16;54(1):200. doi: 10.1186/s41182-026-01073-8. PMID 42750051

+Investigators