CClinicalTrials.gg
CompletedNCT05975502Updated Aug 4, 2023

Congenital Syphilis in Switzerland

An observational study in Congenital Syphilis, sponsored by University Hospital, Geneva. Completed at 1 site in Switzerland. Per ClinicalTrials.gov, last updated 2023-08-04.

Sponsored by University Hospital, Geneva · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
265
Sex
All
01

Study summary

A retrospective national epidemiological Swiss study was conducted to establish a real prevalence and description of congenital syphilis, and to better classify the reported congenital syphilis.

Maternal risk factors to contract syphilis (i.e. socio-demographic, cultural and clinical factors) were also evaluated, in order to focus on prevention of these targeted population.

Follow up of the children born from mother with syphilis during pregnancy, until age 6, was recorded to evaluate the risk of congenital syphilis following treatment of maternal syphilis.

Read the detailed description

We conducted an observational and descriptive retrospective multicentric national study in Switzerland of all pregnant women diagnosed with syphilis during their pregnancy and their babies from childbirth to age 6.

Retrospective clinical and biological data already collected in the patient's medical file from 2012 until 2021 were collected from pregnant women diagnosed with syphilis during their pregnancy and their babies from childbirth to age 6, in Swiss universities and cantonal hospitals.

Cases were collected through the computerized laboratory records by selecting all pregnant women with a positive TPHA / TPPA serology and children born to mothers who had syphilis diagnosed during pregnancy or / and with a positive TPHA / TPPA serology. Data collected included clinical information's, results of biological tests and imagery available from the hospital's internal archiving system and registered on two standardized coded case report forms (one for the mother and one for the babies).

Recent guidelines from the Centers for Disease Control recommend testing for syphilis at the first prenatal visit and again at 28 weeks gestation and at delivery if at high risk for syphilis acquisition during pregnancy. The identification, through the collection of epidemiological data, of risk factors for developing congenital syphilis during pregnancy may improve the prevention of congenital syphilis in the population at risk. It would make it possible to carry out preventive actions, repeated screening of syphilis during pregnancy and closer monitoring in a targeted population of women of childbearing age.

Thus, a proactive sentinel network could be developed to limit new cases of congenital syphilis in Switzerland, with the development of tools that could send alerts to the various specialists involved (biologist, gynaecologist, paediatrician, dermatologist) when a syphilis serology comes back positive in a pregnant woman.

This project is part of one of WHO's goals to eradicate congenital syphilis, as a better knowledge of congenital syphilis could lead us to propose solutions intended to reduce this serious disease. All the more that congenital syphilis is preventable by syphilis pregnancy screening and the burden of congenital syphilis is avoidable with a simple cost-effective treatment.

02

Conditions studied

  • Congenital Syphilis

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Keywords

  • Congenital syphilis
  • pregnant women with syphilis
03

In context

Syphilis

120 studies on the registry are indexed under Syphilis; 33 are open to participants now.

This study's enrollment of 265 is below the median of 356 across 36 observational studies indexed under Syphilis.

Browse Syphilis studies →

Lead sponsor

University Hospital, Geneva is the lead sponsor of 372 studies on the registry; 68 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

All pregnant women with a positive syphilis screening and their babies until age 6 from university and cantonal hospitals in Switzerland (Geneva, Lausanne, Zurich, Bern, Basel, Saint Gallen, Valais, Lugano) in dermatology, paediatric and gynaecology wards.

Retrospective analysis of data from medical records.

Inclusion criteria

  • All pregnant women who had a positive TPHA / TPPA serology during pregnancy.
  • All children born to mothers who had syphilis diagnosed during pregnancy or / and with a positive TPHA / TPPA serology.

Exclusion criteria

Exclusion Criteria:

  • Document in the medical file attesting to a refusal of consent to the re-use of the data
05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
265 participants (actual)
Patient registry
No

Groups and cohorts

  • Pregnant women with positive syphilis serology

    Pregnant women with blood TPHA/TPPA ≥ 80

    Other: Epidemiological study

  • Children born with positive syphilis serology

    Children born from mothers with syphilis during pregnancy and / or with blood TPHA/TPPA ≥ 80 at birth

    Other: Epidemiological study

Interventions

  • OtherEpidemiological study

    Study of epidemiological characteristics of women with syphilis during pregnancy and of children born from mothers with syphilis during pregnancy.

06

What researchers measure

Primary outcomes

  1. To quantify the number of syphilis cases during pregnancy and the number of congenital syphilis cases.

    Study of medical records of all university hospitals in Switzerland through a national observational epidemiological study from 2012 until now.

    Time frame: Ten years: 2012 - 2021

  2. To describe maternal characteristics associated with congenital syphilis (i.e. socio-demographic, cultural and clinical factors), in order to focus on prevention of these targeted population.

    Study of medical records of all university hospitals in Switzerland through a national observational epidemiological study from 2012 until now.

    Time frame: Ten years: 2012 - 2021

Secondary outcomes

  1. To describe the clinical itinerary, follow-up and development of their baby from birth to age 6.

    Time frame: Ten years: 2012 - 2021

07

Study locations

1 site
  • Laurence Toutous Trellu
    Geneva, 1204, Switzerland
08

References and documents

Publications

  • Kimball A, Bowen VB, Miele K, Weinstock H, Thorpe P, Bachmann L, McDonald R, Machefsky A, Torrone E. Congenital Syphilis Diagnosed Beyond the Neonatal Period in the United States: 2014-2018. Pediatrics. 2021 Sep;148(3):e2020049080. doi: 10.1542/peds.2020-049080. PubMed 34465590 ↗
  • Salome S, Cambriglia MD, Scarano SM, Capone E, Betts I, Pacella D, Sansone M, Mazzarelli LL, Lo Vecchio A, Ranucci G, Marinosci GZ, Capasso L, Salvatore P, Raimondi F. Congenital syphilis in the twenty-first century: an area-based study. Eur J Pediatr. 2023 Jan;182(1):41-51. doi: 10.1007/s00431-022-04703-5. Epub 2022 Nov 14. PubMed 36376519 ↗
  • Townsend CL, Francis K, Peckham CS, Tookey PA. Syphilis screening in pregnancy in the United Kingdom, 2010-2011: a national surveillance study. BJOG. 2017 Jan;124(1):79-86. doi: 10.1111/1471-0528.14053. Epub 2016 May 24. PubMed 27219027 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 4, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05975502
Lead sponsor
University Hospital, Geneva
Collaborators
Fonds national Suisse
Responsible party
Laurence Toutous Trellu (Medical Doctor, University Hospital, Geneva) — Principal investigator
First posted
Aug 4, 2023
Start date
Oct 19, 2022
Primary completion
Jun 30, 2023
Completion
Jul 4, 2023
Last update
Aug 4, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2023. You cannot join it, but the record below documents what was studied.

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