Age-adjusted high-dose chemotherapy followed by autologous stem cell transplantation or conventional chemotherapy with R-MP as first-line treatment in elderly primary CNS lymphoma patients - the randomized phase III PRIMA-CNS trial

BACKGROUND

Older primary central nervous system lymphoma (PCNSL) patients have an inferior prognosis compared to younger patients because available evidence on best treatment is scarce and treatment delivery is challenging due to comorbidities and reduced performance status. High-dose chemotherapy and autologous stem cell transplantation (HCT-ASCT) after high-dose methotrexate (MTX)-based immuno-chemotherapy has become an increasingly used treatment approach in eligible elderly PCNSL patients with promising feasibility and efficacy, but has not been compared with conventional chemotherapy approaches. In addition, eligibility for HCT-ASCT in elderly PCNSL is not well defined. Geriatric assessment (GA) may be helpful in selecting patients for the best individual treatment choice, but no standardized GA exists to date. A randomized controlled trial, incorporating a GA and comparing age-adapted HCT-ASCT treatment with conventional chemotherapy is needed.

METHODS

This open-label, multicenter, randomized phase III trial with two parallel arms will recruit 310 patients with newly diagnosed PCNSL > 65 years of age in 40 centers in Germany and Austria. The primary objective is to demonstrate that intensified chemotherapy followed by consolidating HCT-ASCT is superior to conventional chemotherapy with rituximab, MTX, procarbazine (R-MP) followed by maintenance with procarbazine in terms of progression free survival (PFS). Secondary endpoints include overall survival (OS), event free survival (EFS), (neuro-)toxicity and quality of life (QoL). GA will be conducted at specific time points during the course of the study. All patients will be treated with a pre-phase rituximab-MTX (R-MTX) cycle followed by re-assessment of transplant eligibility. Patients judged transplant eligible will be randomized (1:1). Patients in arm A will be treated with 3 cycles of R-MP followed by maintenance therapy with procarbazine for 6 months. Patients in arm B will be treated with 2 cycles of MARTA (R-MTX/AraC) followed by busulfan- and thiotepa-based HCT-ASCT.

DISCUSSION

The best treatment strategy for elderly PCNSL patients remains unknown. Treatments range from palliative to curative but more toxic therapies, and there is no standardized measure to select patients for the right treatment. This randomized controlled trial will create evidence for the best treatment strategy with the focus on developing a standardized GA to help define eligibility for an intensive treatment approach.

TRIAL REGISTRATION

German clinical trials registry DRKS00024085 registered March 29, 2023.

Quality of life after cystectomy and urinary diversion: results of a retrospective interdisciplinary study

PURPOSE

Now that creation of continent urinary reservoirs has become a standardized and clinically well established surgical technique with known morbidity and mortality rates, we reassessed the psychological and social aspects of this treatment compared with wet urostomy.

MATERIALS AND METHODS

We developed a questionnaire (102 items) addressing general aspects of quality of life, disease related social support, coping strategies and stoma related issues. It was mailed to 600 patients with ileal conduits and 130 with continent reservoirs. Final analysis was restricted to 192 patients operated upon within the last 5 years (mean followup 2.7 years).

RESULTS

The resulting groups were matched and paralleled regarding most treatment related and sociodemographic data. Final analysis did not reveal differences between the groups in disease related social support, coping strategies or quality of life when expressed as a total score. We found statistically significant superiority of continent reservoirs regarding all stoma related items, patient global self-assessment of their quality of life (single item, p < 0.005), physical strength, mental capacity, leisure time activities and social competence (p < 0.05).

CONCLUSIONS

Continent diversion is clearly advantageous with respect to all items directly related to the stoma. The significant superiority of continent diversion in patient global self-assessment of their quality of life reflects the highly subjective dimension of the concept. Superiority in self-ratings of physical strength, mental capacity, leisure time activities and social competence could be interpreted as indicators of enhanced vitality in those patients, thus, supporting our understanding that women and men who actively participate in life have a special benefit from continent reservoirs.