Evidence map›Paper›PMID 40844651›Full record

Trial reportThe patient2026

Subcutaneous Infusion of Benzathine Penicillin G Is Acceptable and Preferred Over Intramuscular Injections for Syphilis in Western Australian Sexual Health Clinic Attendees: A Mixed Methods Sub-study.

Shakayla L Walley, Jane Oliver, Stephanie L Enkel, Alice Kupara, Simon Swallow, Joseph Cotter, Gerard F Hoyne, Thel K Hla, Laurens Manning

Abstract readClinical Trial, Phase II
In one paragraph

Trial report in The patient, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Review
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

9 authors.

Shakayla L WalleySchool of Health Sciences, University of Notre Dame Australia, Fremantle, WA, Australia.ORCID 0009-0002-9456-5071
Jane OliverWesfarmers Centre of Vaccines and Infectious Diseases, The Kids Research Institute Australia, Nedlands, WA, Australia.ORCID 0000-0001-5548-7512
Stephanie L EnkelWesfarmers Centre of Vaccines and Infectious Diseases, The Kids Research Institute Australia, Nedlands, WA, Australia.ORCID 0000-0003-4075-0781
Alice KuparaSouth Terrace Clinic, Fremantle Hospital, Fremantle, WA, Australia.
Simon SwallowSouth Terrace Clinic, Fremantle Hospital, Fremantle, WA, Australia.
Joseph CotterSouth Terrace Clinic, Fremantle Hospital, Fremantle, WA, Australia.ORCID 0000-0002-3712-8425
Gerard F HoyneSchool of Health Sciences, University of Notre Dame Australia, Fremantle, WA, Australia.ORCID 0000-0002-7370-9139
Thel K Hla *Wesfarmers Centre of Vaccines and Infectious Diseases, The Kids Research Institute Australia, Nedlands, WA, Australia. thel.hla@thekids.org.au.ORCID 0000-0002-5233-4438
Laurens Manning *Wesfarmers Centre of Vaccines and Infectious Diseases, The Kids Research Institute Australia, Nedlands, WA, Australia.ORCID 0000-0003-4334-5351

Funding

Department of Health Sexually Transmitted Infections and Blood Borne Viruses Research Program 6VA9BPLMedical Research Future Fund Emerging Leadership 2 Fellowship APP1197177
6 · The paper itself

Abstract

backgroundControlling the syphilis epidemic in Australia is a public health priority. Regular intramuscular (IM) injections of benzathine penicillin G (BPG) are the current standard of care for late latent syphilis in Australia; however, repeated IM BPG injections are painful, and treatment completion rates are low. Early-phase clinical trials have demonstrated the tolerability and safety of high-dose subcutaneous infusions of BPG (SCIP), where the total treatment dose can be delivered at a single visit. Here we describe the experiences and preferences of attendees of Western Australian sexual health clinics in the Perth metropolitan region who have syphilis and were treated with SCIP.

methodsThis was a mixed methods sub-study of a phase IIa clinical trial (ACTRN12622000349741). Eligible participants attended South Terrace Sexual Health Clinic in Fremantle, Western Australia, after referral from physicians to the South Metropolitan Health Service. Nine participants were followed up with for 24 weeks after receiving SCIP. Semi-structured interviews were conducted at three time points. All interviews were audio recorded, transcribed verbatim and underwent content and thematic analyses.

resultsTwo themes were identified: (1) tolerance of SCIP and (2) SCIP is preferred over IM BPG. SCIP was well-tolerated by participants, who praised the ease and convenience of the procedure. Participants described instances of mild to moderate pain during and after SCIP, substantiated by self-reported pain scores and adapted Skindex-16 scores. All participants stated that they would prefer SCIP over IM BPG as syphilis treatment, and that they would be willing to receive SCIP again should re-infection occur.

conclusionAll participants described tolerable infusion experiences with a clear preference for SCIP over IM BPG to treat syphilis. SCIP has potential to replace IM BPG in clinical practice. Further research is needed to determine the acceptability and efficacy of SCIP in diverse cohorts.

Indexed as

Anti-Bacterial AgentsPatient PreferencePenicillin G BenzathineSyphilisAdultFemaleHumansInjections, IntramuscularInjections, SubcutaneousMaleMiddle AgedWestern AustraliaAnti-Bacterial AgentsPenicillin G Benzathine

Identifiers

PMID40844651
PMCPMC12789200

What OpenQuestion holds

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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.