Itziar got her Biology degree at Euskal Herriko Unibertsitatea, Bizkaia. She began her research career studying genetic alterations in Non-Small Cell Lung Cancer, in the Oncology Laboratory at Hospital Universitario de Cruces (Bizkaia). From 2000 to 2018, she worked in the group of Dr.Rafael Rosell, in the Cancer Molecular Biology Laboratory in the Department of Oncology at the Catalan Institute of Oncology (ICO) at Germans Trias i Pujol Hospital. During this time, her research focused on the genetic alterations in Non-Small Cell Lung Cancer, both in liquid biopsy and tumoral tissues.
During her PhD degree, she worked as visiting scholar in the Winship Cancer Institute, University of Emory (Atlanta, GA, USA), under the supervision of Dr. Paula M.Vertino. In this laboratory she studied DNA methylation and silencing of genes involved in the LKB1 pathway in Non-Small Cell Lung Cancer. Then she completed her PhD at Cancer Molecular Biology Laboratory in the Department of Oncology at the Catalan Institute of Oncology (ICO) Germans Trias i Pujol Hospital with a Doctoral Thesis entitled " LKB1/AMPK/TSC2 signaling pathway alterations in NSCLC " for which she received the award "Premi extraordinari de Doctorat del curs acadèmic 2014-2015", Universitat Autónoma de Barcelona.
From 2018 she works as a staff member of the Molecular Biology Unit of the Department of Hematology-Laboratory of the Catalan Institute of Oncology (ICO), Germans Trias i Pujol Hospital, under the direction of Dr. Lurdes Zamora and Dr. Tomás Navarro, devoted to molecular diagnosis and monitoring of hematological malignancies. Her current field of research is the application of liquid biopsy to lymphomas.