Browsing by Author "Taskindoust, Mahsa"

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    Late Effects after Umbilical Cord Blood Transplantation in Very Young Children after Busulfan-Based, Myeloablative Conditioning.
    (Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation, 2016-09) Allewelt, Heather; El-Khorazaty, Jill; Mendizabal, Adam; Taskindoust, Mahsa; Martin, Paul L; Prasad, Vinod; Page, Kristin; Sanders, Jean; Kurtzberg, Joanne
    Infants and young children who undergo allogeneic cord blood transplantation (CBT) are at increased risk for late effects because of exposure of developing organs to chemotherapy and radiation therapy typically used in transplant conditioning regimens. Busulfan (Bu)-based myeloablative regimens were developed to eliminate radiation exposure in these young children with the hope that late effects would be minimized. We now describe the late effects in 102 consecutive patients surviving a minimum of 5 years (median follow-up, 12.9 years) post-CBT. Patients were conditioned with high-dose chemotherapy using Bu-containing regimens. No patient received total body irradiation. The median age at transplant was 1 year (range, .1 to 2). Diagnoses included inherited metabolic diseases (59.8%), leukemia (17.6%), congenital immune deficiency (20.2%), bone marrow failure/myelodysplastic syndrome (3.9%), and hemoglobinopathy (2%). Among patients surviving 5 years, the overall survival rate at 10 years post-CBT was 93% (95% CI, 84.9 to 96.8). Virtually all patients (98%) experienced at least 1 significant late effect. Most (83.3%) experienced 2 or more late effects, and more than half of the patients (64.7%) experienced 3 or more late effects. The most commonly observed late effects included dental problems (92.2%), short stature (55.9%), cognitive deficits (53.6%), pulmonary dysfunction (18.6%), and abnormal pubertal development (27.9%). This is the first report of late effects of Bu-based conditioning in a cohort of very young patients at the time of transplant. These results will inform clinical care guidelines for long-term follow-up and add to the growing information regarding outcomes of hematopoietic stem cell transplantation.
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    Long-Term Functional Outcomes following Hematopoietic Stem Cell Transplant for Early Infantile Krabbe Disease.
    (Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation, 2018-06-19) Allewelt, Heather; Taskindoust, Mahsa; Troy, Jesse; Page, Kristin; Wood, Susan; Parikh, Suhag; Prasad, Vinod K; Kurtzberg, Joanne
    Allogeneic hematopoietic stem cell transplantation (HSCT) can retard the progression of early infantile Krabbe disease (EIKD). Superior outcomes are achieved if HSCT is performed prior to the onset of symptoms, however little information is available about the long-term outcomes in surviving patients. We now describe functional outcomes in pre-symptomatic infants who underwent HSCT for EIKD at ≤2 months of life. Records of the 19 patients who underwent HSCT for EIKD at ≤2 months of age from 1996-2010 were reviewed. Long-term functional outcomes were compared between those transplanted at <30 days and ≥30 days of life. Median age at transplant was 27 days (range 19-61). Median follow-up of the cohort was 12.6 years. Overall survival at 5 and 10 years post-transplant was 84.2% (95% CI:58.7-94.6%) and 78.6% (95% CI:52.5-91.4%), respectively. More favorable outcomes were seen in patients who underwent HSCT at <30 days of age, particularly in domains of mobility (p=0.01), communication (p=0.02), and feeding (p=0.008). Improved functional outcomes were observed when HSCT was performed in the first month of life, defining a critical period for intervention. These results support the implementation of newborn screening to enable rapid diagnosis and early treatment of infants with EIKD.
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    Systematic Review of Tissue Expansion: Utilization in Non-breast Applications.
    (Plastic and reconstructive surgery. Global open, 2021-01-21) Langdell, Hannah C; Taskindoust, Mahsa; Levites, Heather A; Mateas, Catalin; Sergesketter, Amanda R; Kaplan, Samantha J; Marcus, Jeffrey R; Erdmann, Detlev

    Background

    Tissue expansion is a versatile reconstructive technique providing well-vascularized local tissue. The current literature focuses largely on tissue expansion for breast reconstruction and in the context of burn and pediatric skin/soft tissue replacement; however, less traditional applications are also prevalent. The aim of this study was to systematically review the utilization of tissue expansion in such less well-characterized circumstances.

    Methods

    The authors conducted a systematic review of all publications describing non-breast applications of tissue expansion. Variables regarding expander specifications, expansion process, and complications were collected and further analyzed.

    Results

    A total of 565 publications were identified. Of these, 166 publications described tissue expansion for "less traditional" indications, which fell into 5 categories: ear reconstruction, cranioplasty, abdominal wall reconstruction, orthopedic procedures, and genital (penile/scrotal and vaginal/vulva) reconstruction. While lower extremity expansion is known to have high complication rates, tissue expander failure, infection, and exposure rates were in fact highest for penile/scrotal (failure: 18.5%; infection: 15.5%; exposure: 12.5%) and vaginal/vulva (failure: 20.6%; infection: 10.3%; exposure: 6.9%) reconstruction.

    Conclusions

    Tissue expansion enables index operations by providing additional skin before definitive reconstruction. Tissue expanders are a valuable option along the reconstructive ladder because they obviate the need for free tissue transfer. Although tissue expansion comes with inherent risk, aggregate outcome failures of the final reconstruction are similar to published rates of complications without pre-expansion. Thus, although tissue expansion requires a staged approach, it remains a valuable option in facilitating a variety of reconstructive procedures.