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Simple Summary: Cladribine is a chemotherapy used in combination with other chemotherapy drugs in adult patients with acute myeloid leukemia (AML) who relapse or are nonresponsive to treatment. It appeared to work well and is now used for newly diagnosed adult patients. While it is commonly used in adults, it has not been used routinely in children. We looked at medical records of pediatric and adolescent patients treated for AML at MD Anderson to analyze its safety and how well it works against AML. It was found to be safe and well tolerated in these patients and also showed improved survival outcomes. About half of the patients responded to cladribine either by itself or with other chemotherapy agents. This review also highlighted its safety in combination with other agents. We found these combinations to be well tolerated and could provide additional options for pediatric providers who are treating relapsed AML. Background: Cladribine-based combination chemotherapy has demonstrated promising efficacy in patients with relapsed/refractory adult acute myeloid leukemia (AML), prompting its increased utilization in the frontline; in pediatrics, it has been typically reserved for relapsed or refractory cases. While fludarabine has been used more commonly as a purine analog in intensive regimens, cladribine may be an important alternative. Methods: We performed a retrospective study at MD Anderson Cancer Center from January 2015 to July 2023, which included patients aged 1–21 years with refractory or relapsed AML who received cladribine outside of a transplant conditioning. Results: A total of 30 patients were included, with a median age of 20 years (range, 2–21), and 55% being male. Similar to adults, cladribine exhibited good tolerability in pediatric and adolescent patients, with the most common adverse events being febrile neutropenia and myelosuppression. The most common grade 3 or 4 adverse events included febrile neutropenia (55%) and sepsis (26%), and there were no treatment discontinuations due to adverse events. Among patients with a median number of 2 (0–7) prior treatments, the overall response rate (CR/CRi) was 45%, and median event-free and overall survival were 6 and 12 months, respectively. Disease progression resulted in 4 deaths within 30 days of treatment. Conclusions: Cladribine was tolerated in pediatrics. No new safety signals were seen with cladribine regimens in this cohort. Response assessment is limited due to the heavily pretreated cohort. Further prospective studies are warranted on the safety and efficacy of cladribine and establish its role in pediatric, adolescent, and early young adult patients with AML. [ABSTRACT FROM AUTHOR]

Simple Summary: Pediatric patients with relapsed or refractory acute myeloid leukemia (AML) have poor survival with current therapy. Venetoclax is a small molecule inhibitor that has shown promise in both adult and pediatric leukemias. Here we describe the joint experience of the Texas Medical Center (The University of Texas MD Anderson Cancer Center and Baylor College of Medicine/Texas Children's Hospital) use of venetoclax in combination with various therapies for the treatment of pediatric relapsed AML. We report the safety and efficacy of this regimen in this population. The BCL-2 inhibitor venetoclax improves survival for adult patients with acute myeloid leukemia (AML) in combination with lower-intensity therapies, but its benefit in pediatric patients with AML remains unclear. We retrospectively reviewed two Texas Medical Center institutions' experience with venetoclax in 43 pediatric patients with AML; median age 17 years (range, 0.6–21). This population was highly refractory; 44% of patients (n = 19) had ≥3 prior lines of therapy, 37% (n = 16) had received a prior bone marrow transplant, and 81% (n = 35) had unfavorable genetics KMT2A (n = 17), WT1 (n = 13), FLT3-ITD (n = 10), monosomy 7 (n = 5), TP53 (n = 3), Inv(3) (n = 3), IDH1/2 (n = 2), monosomy 5 (n = 1), NUP98 (n = 1) and ASXL1 (n = 1). The majority (86%) received venetoclax with a hypomethylating agent. Grade 3 or 4 adverse events included febrile neutropenia in 37% (n = 16), non-febrile neutropenia in 12% (n = 5), anemia in 14% (n = 6), and thrombocytopenia in 14% (n = 6). Of 40 patients evaluable for response, 10 patients (25%) achieved complete response (CR), 6 patients (15%) achieved CR with incomplete blood count recovery (CRi), and 2 patients (5%) had a partial response, (CR/CRi composite = 40%; ORR = 45%). Eleven (25%) patients received a hematopoietic stem cell transplant following venetoclax combination therapy, and six remain alive (median follow-up time 33.6 months). Median event-free survival and overall survival duration was 3.7 months and 8.7 months, respectively. Our findings suggest that in pediatric patients with AML, venetoclax is well-tolerated, with a safety profile similar to that in adults. More studies are needed to establish an optimal venetoclax-based regimen for the pediatric population. [ABSTRACT FROM AUTHOR]

Evidence suggests neighborhood-level factors contribute to cancer outcomes, although most research focuses on pediatric and adult populations. Using population-based data from the Texas Cancer Registry, we examined neighborhood-level social vulnerability, a composite measure of 14 census tract-level social risk factors, and survival among 112 142 adolescents and young adults with cancer (AYAs, age 15-39 years). We estimated 1-, 5-, and 10-year overall survival by quintile of social vulnerability and used Cox proportional hazards models (2-sided significance testing) to estimate the association between social vulnerability and all-cause mortality. Survival decreased as social vulnerability increased; for example, 5-year survival was 86.5% (95% confidence interval [CI] = 85.1 to 87.0) in the least vulnerable quintile compared to 74.0% (95% CI = 73.4 to 74.5) in the most vulnerable quintile. Social vulnerability was associated with all-cause mortality in adjusted models (highest vs lowest quintile: adjusted hazard ratio [aHR] = 1.55, 95% CI = 1.48 to 1.63). Achieving equity in AYAs' survival requires interventions to address neighborhood disparities., (© The Author(s) 2024. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oup.com.)

Introduction: Fertility after cancer is a top concern for adolescents and young adults with cancer (AYAs) (15-39 years old at diagnosis). The authors characterized live births after cancer by race and ethnicity ("race/ethnicity") in a population-based sample of female AYAs., Methods: This study used Texas Cancer Registry data linked to birth certificates (1995-2016) to estimate cumulative incidence of live birth, based on first live birth after cancer, and compared differences by race/ethnicity. Proportional subdistribution hazards models were used to estimate associations between race/ethnicity and live birth, adjusted for diagnosis age, cancer type, stage, year, and prior live birth, overall and for each cancer type., Results: Among 65,804 AYAs, 10-year cumulative incidence of live birth was lower among non-Hispanic Black AYAs than other racial/ethnic groups: 10.2% (95% confidence interval [CI], 9.4-10.9) compared to 15.9% (95% CI, 14.1-17.9) among Asian or Pacific Islander, 14.7% (95% CI, 14.2-15.3) among Hispanic, and 15.2% (95% CI, 14.8-15.6) among non-Hispanic White AYAs (p < .01). In the adjusted overall model, Black AYAs were less likely to have a live birth after cancer than all other groups. In adjusted models for each cancer type, live birth was significantly less likely for Black AYAs with gynecologic cancers or lymphomas (compared to White AYAs) or thyroid cancers (compared to Hispanic AYAs)., Conclusion: Black AYAs are less likely than AYAs of other races/ethnicities to have a live birth after cancer, in contrast to patterns of live birth in the general population. Research and action to promote childbearing equity after cancer are imperative., (© 2024 American Cancer Society.)

Background: We examined adverse birth outcomes among adolescent and young adult women diagnosed with cancer (AYA women, ages 15-39 years) during pregnancy., Methods: We linked data from the Texas Cancer Registry, vital records, and Texas Birth Defects Registry to identify all singleton births to AYA women diagnosed during pregnancy from January 1999 to December 2016. We compared prevalence of adverse live birth outcomes between AYA women and women without cancer (matched 1:4 on age, race and ethnicity, and year). Among AYA women, we used log-binomial regression to identify factors associated with these outcomes. Statistical tests were 2-sided., Results: AYA women had 1271 singleton live births and 20 stillbirths. AYA women (n = 1291) were 33.3% Hispanic and 9.8% non-Hispanic Black and most commonly had breast (22.5%), thyroid (19.8%), and gynecologic (13.3%) cancers. Among live births, AYA women had a higher prevalence of low birth weight offspring (30.1% vs 9.0%), very preterm (5.7% vs 1.2%), and preterm birth (25.1% vs 7.2%); cesarean delivery (44.3% vs 35.2%); and low Apgar score (2.7% vs 1.5%), compared with women without cancer (n = 5084) (all P < .05). Prevalence of any birth defect by age 12 months did not statistically differ (5.2% vs 4.7%; P = .48), but live births to AYA women more often had heart and circulatory system defects (2.2% vs 1.3%; P = .01). In adjusted models, cancer type and chemotherapy were associated with adverse live birth outcomes., Conclusions: AYA women diagnosed during pregnancy have higher prevalence of adverse birth outcomes and face difficult decisions in balancing treatment risks and benefits., (© The Author(s) 2023. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oup.com.)