Jo Lynne Rokita

Scientific Committee

Philadelphia, PA, USA

Children’s Hospital of Philadelphia



Supervisory Bioinformatics Scientist

Children's Hospital of Philadelphia

Jo Lynne’s broad research interests lie in identifying and validating novel coding, noncoding, epigenetic, and/or transcriptional mechanisms contributing to oncogenesis, tumor evolution, and progression/relapse of pediatric high-grade diffuse astrocytic tumors. She combines molecular, genomics, and machine learning approaches to discover and validate novel actionable oncogenic targets and/or pathways with the overall goal of informing current therapeutic regimens leading to future clinical trials.


Children’s Hospital of Philadelphia

Philadelphia, PA, USA



Mai T. Dang paper image


Macrophages in SHH Subgroup Medulloblastoma Display Dynamic Heterogeneity That Varies With Treatment Modality

Tumor-associated macrophages (TAMs) play an important role in tumor immunity and comprise of subsets that have distinct phenotype, function, and ontology. Transcriptomic analyses of human medulloblastoma, the most common malignant pediatric brain cancer, showed that medulloblastomas (MBs) with activated sonic hedgehog signaling (SHH-MB) have significantly more TAMs than other MB subtypes. Therefore, we examined MB-associated TAMs by single-cell RNA sequencing of autochthonous murine SHH-MB at steady state and under two distinct treatment modalities: molecular-targeted inhibitor and radiation. Our analyses reveal significant TAM heterogeneity, identify markers of ontologically distinct TAM subsets, and show the impact of brain microenvironment on the differentiation of tumor-infiltrating monocytes. TAM composition undergoes dramatic changes with treatment and differs significantly between molecular-targeted and radiation therapy. We identify an immunosuppressive monocyte-derived TAM subset that emerges with radiation therapy and demonstrate its role in regulating T cell and neutrophil infiltration in MB.

Mai T. Dang, Michael V. Gonzalez, Krutika S. Gaonkar, Komal S. Rathi, Patricia Young, Sherjeel Arif, Li Zhai, Zahidul Alam, Samir Devalaraja, Tsun Ki Jerrick To, Ian W. Folkert, Pichai Raman, Jo Lynne Rokita, Daniel Martinez, Jaclyn N. Taroni, Joshua A. Shapiro, Casey S. Greene, Candace Savonen, Fernanda Mafra, Hakon Hakonarson, Tom Curran, Malay Haldar

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