Breast Cancer Therapy–Related Cardiac Dysfunction in Adult Women Treated in Routine Clinical Practice: A Population-Based Cohort Study
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Résumé
PURPOSE: Most women diagnosed with breast cancer are younger than 65 years of age. Population-based studies on cancer therapy-related cardiotoxicity have focused on older women. We sought to determine the risk of cardiotoxicity with breast cancer therapy in women with an age distribution representative of routine clinical practice. METHODS: This was a population-based retrospective cohort study including 14 regional cancer centers in Ontario, Canada. Adult women receiving chemotherapy for stage I to III breast cancer between 2007 and 2012 were included. Cancer treatment was categorized as follows: anthracycline-based chemotherapy without trastuzumab, trastuzumab with nonanthracycline chemotherapy, anthracyclines followed by trastuzumab (sequential therapy), and chemotherapy without anthracycline/trastuzumab (other chemotherapy). The primary outcome was a composite of hospitalization or emergency room visit for congestive heart failure (CHF), outpatient diagnosis of CHF, or cardiovascular death. A sensitivity analysis limited the outcomes to hospital-based CHF events. Cause-specific hazard models were used accounting for the competing risk of noncardiovascular death. RESULTS: Of 18,540 women included (median age, 54 years; interquartile range, 47 to 63 years), 79% were younger than age 65 years. The cumulative incidence of the primary outcome was 3.08% (95% CI, 2.81% to 3.36%) by 3 years of follow-up, whereas in an age-matched sample of Ontario women (n = 92,700) without breast cancer, it was 0.96% (95% CI, 0.89% to 1.04%). Compared with those receiving other chemotherapy, patients receiving trastuzumab with nonanthracycline chemotherapy and sequential therapy were at a higher risk of cardiotoxicity (hazard ratio, 1.76 [95% CI, 1.19 to 2.60] and 3.96 [95% CI, 3.01 to 5.22], respectively). Hospital-based CHF events were only increased with sequential therapy (hazard ratio, 1.86; 95% CI, 1.07 to 3.22). CONCLUSION: In women with breast cancer and an age distribution representative of routine clinical practice, trastuzumab-based regimens, including those without anthracyclines, were associated with an increased risk of cardiotoxicity. Sequential therapy increased the risk of hospital-based CHF events.
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Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,011 | 0,005 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,002 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle