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May 14 , 2021 MUSTANGBIO Mustang Bio Reports First Quarter 2021 Financial Results and Recent Corporate Highlights WORCESTER , Mass . , May 14 , 2021 ( GLOBE NEWSWIRE ) -- Mustang Bio , Inc. ( " Mustang " ) ( NASDAQ : MBIO ) , a clinical - stage biopharmaceutical company focused on translating today's medical breakthroughs in cell and gene therapies into potential cures for hematologic cancers , solid tumors and rare genetic diseases , today announced financial results and recent corporate highlights for the first quarter ended March 31 , 2021 . Manuel Litchman , M.D. , President and Chief Executive Officer of Mustang , said , “ In the first quarter of 2021 , we successfully executed our clinical and regulatory strategies and achieved milestones that we believe will drive Mustang's continued progress . We announced encouraging MB - 107 and MB - 207 clinical updates from our investigator - IND trials for X- Linked Severe Combined Immunodeficiency ( " XSCID " ) , as well as additional consistent safety and efficacy data pertaining to our lentiviral vector gene therapies that we have seen over the more than eight years since the first patient was treated in 2012. In January , the U.S. Food and Drug Administration ( " FDA ” ) lifted a Chemistry , Manufacturing and Controls ( " CMC " ) hold on the MB - 107 Investigational New Drug ( " IND " ) application for newly diagnosed infants under the age of two and we expect to dose the first infant in the multicenter trial soon . We also plan to file an IND for our MB - 207 clinical trial for patients with XSCID who have been previously treated with hematopoietic stem cell transplantation ( " HSCT " ) and for whom re - treatment is indicated . " Dr. Litchman continued , “ Notably , we are thrilled with the progress of our MB - 106 CD20- targeted CAR T cell therapy program for relapsed or refractory CD20 + B - cell non - Hodgkin lymphomas ( " B - NHL " ) and chronic lymphocytic leukemia ( " CLL " ) . Earlier this month , we announced that the FDA approved Mustang's IND to initiate a multicenter Phase 1/2 clinical trial investigating the safety and efficacy of MB - 106 for relapsed or refractory CD20 + B - NHL and CLL . Also , we look forward to the Fred Hutchinson Cancer Research Center presentation at the European Hematology Association 2021 ( " EHA2021 ” ) Virtual Congress next month , where Dr. Mazyar Shadman will present updated interim data from their ongoing CD20 - targeted CAR T clinical trial . We are very pleased to have three active Mustang- sponsored INDs , and we anticipate having four active Mustang - sponsored INDS by the end of the year . " Financial Results :