Flat-dose versus weight or body surface area-based methotrexate dosing in low-risk gestational trophoblastic neoplasia.

BACKGROUND: Single-agent methotrexate (MTX) is commonly used as first-line treatment for low-risk gestational trophoblastic neoplasia (LR-GTN), although no international consensus exists on the optimal treatment regimen to maximise complete hCG response (CR) and minimise relapse rates. Current regimens differ in the route of administration, dose scheduling, and use of flat-dose, body surface area (BSA)- or weight-based dosing. In the UK a methotrexate-folinic acid (MTX-FA) 8-day 50 mg intramuscular flat-dose regimen is used, with 15 mg oral folinic acid rescue. In LR-GTN patients, we aim to determine the effect of MTX dose adjustment by BSA and weight upon chemotherapy response and disease relapse. METHODS: Between January 1973 and August 2020, 935 LR-GTN patients treated with first-line MTX-FA were identified from a single UK specialist trophoblastic centre. Of these, 364 were included, of which 178 (49%) had a CR to first-line MTX-FA. Subgroup analyses were performed upon: (i) patients who changed chemotherapy due to MTX toxicity (n = 33); and (ii) patients with a FIGO score of 5-6 (n = 85). Logistic regression analysis explored the relationship between BSA or weight adjusted MTX dosing and: (i) CR to first-line chemotherapy; (ii) incidence of disease relapse. Linear regression analyses assessed the correlation of BSA and weight with the number of MTX-FA cycles required to achieve CR. RESULTS: In LR-GTN patients, BSA and weight adjusted MTX-FA dosing did not influence CR to first-line chemotherapy or the incidence of disease relapse. The number of MTX cycles required to achieve CR was not associated with BSA or weight. These findings were maintained in a subgroup analysis of FIGO 5-6 patients. The incidence of MTX toxicity was not influenced by BSA or weight. CONCLUSIONS: In the treatment of LR-GTN, dose individualisation using BSA or weight is not required, and fixed dosing continues to be preferred as the UK standard.

Evolution of a Teenage and Young Adult Service, in Sheffield, U.K., for Patients with Gestational Trophoblastic Neoplasia.

OBJECTIVE: To describe the evolution of a teenage and young adult (TYA) service for patients with gestational trophoblastic neoplasia (GTN). BACKGROUND: Since its opening in 2002 the TYA unit has demonstrated its effectiveness and ability to care for GTN patients, offering additional emotional assessment and meeting the specific needs that many young GTN patients have. Patients using the TYA unit were identified from the Centre's databases, and individual records were scrutinized for demographics, clinical presentation, barriers to care, compliance, and specific needs. RESULTS: Of the 121 GTN patients who have utilized the facilities, there were 94 complete moles, 11 choriocarcinomas, 3 placental site trophoblastic tumors, 1 twin molar pregnancy, and 4 with persistent unexplained hCG elevation. Presenting with a complicated social background was identified as a barrier to care in 8 patients. In addition to patients, 40 relatives and 12 infants have also utilized the facilities. A total of 33% of patients and carers had social work input and/or refer-ral to psychology services. CONCLUSION: The bespoke service and care offered to TYA patients is appropriate and should be considered the gold standard for young patients, enabling them to cope with their unique challenges during diagnosis and treatment.

Evolution of a specialist gestational trophoblastic disease service with a major nursing component: the Sheffield, United Kingdom, experience.

OBJECTIVE: To describe the evolution of a highly regarded and unique model of multidisciplinary care providing support, monitoring, and treatment for all gestational trophoblastic disease (GTD) patients referred to Sheffield Trophoblastic Disease Centre, 1 of the 3 United Kingdom (UK) supraregional GTD centers. BACKGROUND: The UK GTD service was first established in 1973 and since its inception has centralized care for GTD patients and played a leading international role in developing therapies, management protocols, and biomarker assays with good outcomes for patients. The service preceded recent trends towards centralization for rare cancers in the U.K. In Sheffield the GTD team has evolved to become a true multidisciplinary team with a strong nursing component, which is set to expand in the future. RESULTS: Centralization of care for GTD in the U.K. has been directly associated with the impressive results the service has achieved, with high cure rates (98-100%) and low (5-8%) chemotherapy rates. The addition of GTD nurse specialists has been beneficial to patients as they provide a communication link between patients and their clinicians and ensure that information, support, and advice is available for all GTD patients, both in hospital and at home. CONCLUSION: The UK GTD service is an internationally renowned, multidisciplinary organization. The service achieves impressive clinical results and now features a strong nursing component. The addition of nurse specialists has enabled the team to offer both clinical and psychological care and means that specialist advice is available for patients and healthcare professionals involved in giving care to this patient group.