{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T21:10:26Z","timestamp":1784236226244,"version":"3.55.0"},"reference-count":25,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2024,7,10]],"date-time":"2024-07-10T00:00:00Z","timestamp":1720569600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Objectives: Maternal syphilis can lead to serious adverse pregnancy outcomes, including neonatal death. A 4-fold decline in blood non-treponemal titer at six months after the treatment of syphilis compared to the baseline is considered as an adequate serological response. However, the duration of normal human gestation does not allow the ascertainment of an adequate serological response. Aim: The aim of this study was to assess correlations between the lack of a 4-fold decrease in non-treponemal titer by delivery after syphilis treatment and fetal and newborns\u2019 condition and serological outcomes. Methods: Fourteen pregnant patients (gestational age 16\u201322 weeks) diagnosed with early syphilis (secondary or latent) were treated with intramuscular benzathine penicillin and subsequently monitored clinically, serologically, and ultrasonographically at monthly intervals. Based on the non-treponemal test results at delivery, patients were stratified into two groups: those with a 4-fold decline in titers and those without such a decline. All newborns were clinically and serologically assessed for congenital syphilis at birth and then monitored until serological tests became negative. Results: Fifty percent of the included women did not achieve a 4-fold decline in non-treponemal titer by delivery. Patients from the group showing a 4-fold decline in RPR titer at delivery and those without such a decline did not differ in basic demographic and clinical characteristics or in ultrasound parameters used for fetal assessment. Based on the clinical and laboratory assessments of newborns on the day of delivery and during a 6-month follow-up, none were diagnosed with congenital syphilis or required treatment for syphilis. Conclusions: The lack of an adequate serological response to syphilis therapy by delivery among patients treated between 16 and 22 weeks of pregnancy does not appear to be associated with adverse fetal and neonatal outcomes.<\/jats:p>","DOI":"10.3390\/jcm13144031","type":"journal-article","created":{"date-parts":[[2024,7,10]],"date-time":"2024-07-10T13:34:38Z","timestamp":1720618478000},"page":"4031","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Lack of Serological Response by Delivery to Syphilis Treatment Does Not Impact Pregnancy Outcomes"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7481-2621","authenticated-orcid":false,"given":"Konrad","family":"Kamini\u00f3w","sequence":"first","affiliation":[{"name":"Clinical Department of Dermatology, Medical University of Silesia, Marii Curie-Sk\u0142odowskiej 10, 41-800 Zabrze, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Agnieszka","family":"Kotlarz","sequence":"additional","affiliation":[{"name":"Chair of Gynaecology and Obstetrics, Jagiellonian University Medical College, Miko\u0142aja Kopernika 23, 31-501 Krakow, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2539-3221","authenticated-orcid":false,"given":"Martyna","family":"Kio\u0142basa","sequence":"additional","affiliation":[{"name":"Clinical Department of Dermatology, Medical University of Silesia, Marii Curie-Sk\u0142odowskiej 10, 41-800 Zabrze, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maciej","family":"Pastuszczak","sequence":"additional","affiliation":[{"name":"Clinical Department of Dermatology, Medical University of Silesia, Marii Curie-Sk\u0142odowskiej 10, 41-800 Zabrze, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,7,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1007\/s40471-018-0138-z","article-title":"An Update on the Global Epidemiology of Syphilis","volume":"5","author":"Kojima","year":"2018","journal-title":"Curr. 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