I am committed to delivering compassionate, evidence-based and family-centered care that supports children, adolescents and young adults through every stage of transplant and gene therapy. I strive to integrate cutting-edge science with clear communication, cultural humility and shared decision-making to empower patients and their families.
About Wilson Andres Vasconez Samaniego, MD
W. Andres Vasconez Samaniego, MD, FAAP, is a pediatric blood and marrow transplant physician at Phoenix Children's Blood and Marrow Transplant Program, which is a collaboration with Mayo Clinic Arizona. He has specialized training and clinical experience in providing children, adolescents and young adults with state-of-the-art treatments, including immunotherapy, bone marrow transplants, cellular and genetic therapies for hemoglobinopathies.
Dr. Vasconez Samaniego earned his medical degree from the Pontifical Catholic University of Ecuador School of Medicine in Quito, Ecuador. He trained as a research scholar in pediatrics at the University of Virginia School of Medicine, Child Health Research Center in Charlottesville, Virginia, and completed his residency training in pediatrics at the University of Miami/Jackson Memorial Hospital in Miami, Florida. Dr. Vasconez Samaniego trained as a fellow in pediatric hematology and oncology through a combined program at Johns Hopkins University School of Medicine in Baltimore and the National Cancer Institute at National Institutes of Health in Bethesda, Maryland. He completed his postgraduate medical training in pediatric stem cell transplantation and cellular therapy at the University of Texas, Children's Cancer Hospital at MD Anderson Cancer Center in Houston, Texas.
A passionate advocate for global health initiatives, Dr. Vasconez Samaniego helps educate medical students and trainees as a clinical assistant professor at Phoenix Children's. He also holds academic appointments at the University of Arizona College of Medicine, Creighton University School of Medicine, and Mayo Clinic, Alix School of Medicine in Arizona. Previously, he served as chair of the Johns Hopkins University/National Cancer Institute's Pediatric Hematology and Oncology Fellowship Education Committee. In 2025, Dr. Vasconez Samaniego was selected as the American Academy of Pediatrics Representative for the Sickle Cell Disease Coalition. He is a fellow of the American Academy of Pediatrics and an associate member of the American Society of Hematology, the American Society for Transplantation and Cellular Therapy, the European Society for Blood and Marrow Transplantation and the Latin American BMT group.
Dr. Vasconez Samaniego's research has been published in peer-reviewed journals, including Pediatric Blood & Cancer,Scientific Reports and Blood, the journal for the American Society of Hematology (ASH), among others. He has also been an invited speaker at national and international meetings of the Argentine Society of Hematology, the American Society of Hematology and Yale University School of Medicine, Project ECHO, Heal Sickle session series.
Outside of work, Dr. Vasconez Samaniego enjoys spending quality time with his family, exploring the outdoors and traveling. He also enjoys reading, swimming and staying active to maintain balance and well-being.
Medical School / Education
Pontifical Catholic University of Ecuador School of Medicine, Quito, Ecuador
Residency
(Pediatrics) University of Miami / Jackson Memorial Hospital, Miami, FL
Fellowship
(Pediatric Hematology and Oncology) Johns Hopkins University School of Medicine, Baltimore, MD and National Cancer Institute, National Institutes of Health, Bethesda, MD
(Pediatric Stem Cell Transplantation and Cellular Therapy) University of Texas / Chi
American Academy of Pediatrics Representative for the Sickle Cell Disease Coalition (ASH)
Oral Platform Speaker, American Society of Hematology, Guideline Implementation Champions
First Prize, U Health / University of Miami Health / Jackson Memorial Hospital Quality & Safety Showcase Oral Presentation
Academic Affiliations
Clinical Assistant Professor, Phoenix Children's
Mayo Clinic Alix School of Medicine
Creighton University School of Medicine
University of Arizona College of Medicine - Phoenix
Professional Affiliations
Fellow, American Academy of Pediatrics
Associate Member, American Society of Hematology
Associate Member, American Society for Transplantation and Cellular Therapy
Associate Member, European Society for Blood and Marrow Transplantation
Associate Member, Latin American Bone Marrow Transplantation Group (LABMT)
Representative, American Academy of Pediatrics, Sickle Cell Disease Coalition
Vasconez WA, Fan A, Ramakrishnan R, Tewari P, Olson A, Shpall EJ, Sheikh I. "Post-Transplant Cyclophosphamide for Graft-Versus-Host Disease Prophylaxis in Pediatric Stem Cell Transplantation" Pediatr Blood Cancer. 2025 Dec;72(12):e32061. doi: 10.1002/pbc.32061. Epub 202 Sep 23. PMID: 40985530. https://pubmed.ncbi.nlm.nih.gov/40985530/
Belyea B, Santiago WA, Vasconez WA, Nagalakshmi VK, Mehalic TC, Xu F, Sequeira-Lopez ML, Gomez RA. "A Primitive Type of Renin-expressing Lymphocyte Protects the Organism Against Infections" Sci Rep. 2021 Mar 31;11(1):7251. doi: 10.1038/s41598-021-86629-w. PMID: 33790364 https://pubmed.ncbi.nlm.nih.gov/33790364/
Wilson Andres Vasconez Samaniego, Cristina Matheus, Claudia Aguilar-Velez, Prasanth Narahari, Priyanka Nair, Shanique Sterling, Roxana Middleton, Hector Chavez. "A Resident-Led Quality Improvement Initiative to Optimize Care for Children and Young Adults with Sickle Cell Disease Vaso-Occlusive Pain with Intranasal Fentanyl in the Emergency Department" Blood. 2021. 138 (Supplement 1): 1892. doi: 10.1182. https://doi.org/10.1182/blood-2021-152849
Vasconez WA, Lulseged B, Tsai Varadhan H, Ambinder A, Bolanos-Meade J, Bonifant C, Chen A, DeZern A, Ktena Y, Zambidis E, Jones R, Cooke K, Symons H. "Outcomes of Reduced Intensity and Myeloablative Allogeneic Hematopoietic Cell Transplantation with Post-transplantation Cyclophosphamide for Adolescent and Young Adult Patients with Myelodysplastic Syndrome or Acute Leukemias" 56th Annual Congress of the Societe Internationale D'Oncologie Pediatrique (SIOP), International Society of Paediatric Oncology, October 17th, 2024, Hawai'i Convention Center, Honolulu, HI. ePoster presentation.
Vasconez WA, Lo Yay Leung Y. "Case Study: 21-Year-Old With Duodenal Adenocarcinoma and a History of T- cell Lymphoma" American Society of Hematology. https://www.hematology.org/education/trainees/fellows/casestudies/21-year-old-withduodenal-adenocarcinoma-and-a-history-of-t--cell-lymphoma
