Pregnancy and Congenital Toxoplasmosis

Study Overview
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Brief Summary
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The Toxoplasma gondii parasite causes toxoplasmosis. It is characterized by persistent cysts mostly localised in the brain and ocular areas. In the case of immunodeficiency, those cysts are likely to reactivate. During pregnancy, an infection exposes the foetus to a variety of consequences, from severe neurologic lesions to subclinical forms at birth. However, those forms are likely to complicate at any age to toxoplasmic retinochoroiditis, that can unpredictably recur with severe functional consequences. Pregnancy may stimulate lesions or their recurrences, putting the foetus at risk of contamination because of the release of tachyzoites in the bloodstream. The occurrence of these complications is poorly known, especially with congenital toxoplasmosis. Nevertheless, this information is essential to take care of patients, particularly women with congenital toxoplasmosis, usually worried about the consequences of a pregnancy. As a precaution, women with congenital toxoplasmosis follow a specific ophthalmologic, and trimonthly monitoring, composed of fundus examinations during pregnancy and in postpartum. To eliminate the contamination risk, serological examinations at birth and one year later are done on their kids. The aim of this study is to estimate the risk of toxoplasmic retinochoroiditis during pregnancy and the impact on their children. Retrospective and prospective data from the Lyon Cohort of Maternal and Congenital Toxoplasma Infections will be used. As a result of to this study, the investigators expect to provide better information to women suffering from congenital toxoplasmosis about their own ocular safety during pregnancy, and the safety of their child(ren). The investigators seek to provide new national and international recommendations about these patients and their children's care.

Official Title
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Pregnancy and Congenital Toxoplasmosis : Maternal and Child Risks Assessment, Data From Patients Followed-up in the Lyon Cohort

Conditions
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Congenital Toxoplasmosis, Retinochoroiditis

Intervention / Treatment
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* Other: Estimation of the occurrence of retinochoroiditis in women with congenital toxoplasmosis and previous retinochoroiditis lesions (recurrence) during pregnancy and postpartum.


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Being a woman Born before March 2022 Suffering from congenital toxoplamosis Exclusion Criteria: Refusal to give informed consent Any condition that would limit the ability of the patient to give consent Psychiatric cares To be deprived of liberty To be under administrative supervision

Ages Eligible for Study
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Minimum Age: 21 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Congenital toxoplasmosis women<br>Women older than 21 suffering from congenital toxoplasmosis, with or without children. | Other: Estimation of the occurrence of retinochoroiditis in women with congenital toxoplasmosis and previous retinochoroiditis lesions (recurrence) during pregnancy and postpartum.<br>* All fundus examinations completed during pregnancy and postpartum in women with congenital toxoplasmosis and previous retinochoroiditis lesions are going to be checked.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The number of toxoplasmic retinochoroiditis during pregnancy in women with congenital toxoplasmosis and previous retinochoroiditis lesions (recurrence). | All fundus examinations completed during pregnancy in women with congenital toxoplasmosis and previous retinochoroiditis lesions are going to be checked. The occurrence of retinochoroiditis during pregnancy will be compared to the occurrence of toxoplasmic retinochoroiditis during periods without pregnancy. | Toxoplasmic retinochoroiditis that occured during pregnancy (up to 40 weeks) | 
| The number of toxoplasmic retinochoroiditis during postpartum in women with congenital toxoplasmosis and previous retinochoroiditis lesions (recurrence). | All fundus examinations completed during postpartum in women with congenital toxoplasmosis and previous retinochoroiditis lesions are going to be checked. The occurrence of retinochoroiditis during postpartum will be compared to the occurrence of toxoplasmic retinochoroiditis during periods without pregnancy. | Toxoplasmic retinochoroiditis that occured during postpartum (up to 6 months after the delivery) |