What does this research mean for the field?

Prediction models integrating behavioural, sociodemographic, and host genetic factors show modest performance for predicting reproductive complications after Chlamydia trachomatis infection, suggesting that individual-level risk stratification is unlikely to be clinically useful. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To identify predictors of long-term reproductive complications in individuals with and without chlamydia and develop risk-stratification models.

September 10, 2026Sexually Transmitted InfectionsOpen Access

Can we predict reproductive complications after Chlamydia trachomatis infection? A cohort study integrating demographic, behavioural, host genetic and infection-related factors

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Authors

ZAZ. Alexiou BHBernice M. Hoenderboom NDNicole H. T. M. Dukers–Muijrers

Discussion

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Overview

Cohort study reveals modest accuracy of multifactorial prediction models for reproductive complications after chlamydia infection, suggesting population-level prevention remains necessary.

Key Points

To identify predictors of long-term reproductive complications in individuals with and without chlamydia and develop risk-stratification models.
Analyzed longitudinal data from a Dutch cohort of N=5,704 individuals registered as female who were previously screened for chlamydia (35,523 chlamydia-positive and 66,511 chlamydia-negative person-years).
Evaluated sociodemographic, behavioural, serology, and 24 single nucleotide polymorphisms (SNPs) grouped by biological immune pathways.
Constructed multivariable Cox regression models and derived point-based risk scores estimating 15-year risk for pelvic inflammatory disease (PID), ectopic pregnancy, and tubal factor infertility.
Reproductive complications developed in 7.1% of chlamydia-positive and 5.4% of chlamydia-negative participants over follow-up.
Prediction models achieved modest discrimination across reproductive outcomes, with an area under the curve of approximately 0.65.
Using a ≥15% predicted risk threshold in chlamydia-positive individuals classified 54% as high risk, capturing 75% of composite complications (positive predictive value [PPV] 9.7%), 39% of PID cases (PPV 6.9%), and 10% of ectopic pregnancies (PPV 11.8%).

Cite This Study

Alexiou et al. (2026) studied this question.

synapsesocial.com/papers/6aa27b3558559d80afc74455 https://doi.org/10.1136/sextrans-2025-056761

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September 10, 2026Sexually Transmitted InfectionsOpen Access

Can we predict reproductive complications after Chlamydia trachomatis infection? A cohort study integrating demographic, behavioural, host genetic and infection-related factors

View Full Paper

Ask AI

Bookmark

Authors

ZAZ. Alexiou BHBernice M. Hoenderboom NDNicole H. T. M. Dukers–Muijrers

Discussion

Member takes

Overview

Cohort study reveals modest accuracy of multifactorial prediction models for reproductive complications after chlamydia infection, suggesting population-level prevention remains necessary.

Key Points

To identify predictors of long-term reproductive complications in individuals with and without chlamydia and develop risk-stratification models.
Analyzed longitudinal data from a Dutch cohort of N=5,704 individuals registered as female who were previously screened for chlamydia (35,523 chlamydia-positive and 66,511 chlamydia-negative person-years).
Evaluated sociodemographic, behavioural, serology, and 24 single nucleotide polymorphisms (SNPs) grouped by biological immune pathways.
Constructed multivariable Cox regression models and derived point-based risk scores estimating 15-year risk for pelvic inflammatory disease (PID), ectopic pregnancy, and tubal factor infertility.
Reproductive complications developed in 7.1% of chlamydia-positive and 5.4% of chlamydia-negative participants over follow-up.
Prediction models achieved modest discrimination across reproductive outcomes, with an area under the curve of approximately 0.65.
Using a ≥15% predicted risk threshold in chlamydia-positive individuals classified 54% as high risk, capturing 75% of composite complications (positive predictive value [PPV] 9.7%), 39% of PID cases (PPV 6.9%), and 10% of ectopic pregnancies (PPV 11.8%).

Cite This Study

Alexiou et al. (2026) studied this question.

synapsesocial.com/papers/6aa27b3558559d80afc74455 https://doi.org/10.1136/sextrans-2025-056761

View Full Paper

Ask AI

Bookmark