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        <NameOfInterestedPerson>
          <NamePerson>HAROLD C URSCHEL JR MD DECEASED</NamePerson>
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        <Relationship>CHAIRMAN OF BOARD</Relationship>
        <AmountOfTransaction>889492</AmountOfTransaction>
        <DescriptionOfTransaction>STEM CELL RESEARCH</DescriptionOfTransaction>
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      <GeneralExplanation>
        <ReturnReference>PART 990, PART V, LINE 2A:</ReturnReference>
        <Explanation>NO FORMS W-3 WERE FILED ON MARY CROWLEY MEDICAL RESEARCH CENTER. MARY CROWLEY MEDICAL RESEARCH CENTER HAS ENTERED INTO A "CO-EMPLOYMENT" RELATIONSHIP WITH ANOTHER ORGANIZATION (ALPHASTAFF) WHICH EMPLOYS THOSE WHO ARE NOT INVOLVED IN DIRECT PATIENT CARE. IN 2012 THERE WERE 50 "CO-EMPLOYED" THROUGH THE ALPHASTAFF RELATIONSHIP. IN ADDITION, ALL EMPLOYEES WHO ARE INVOLVED IN DIRECT PATIENT CARE ARE EMPLOYEES OF TEXAS ONCOLOGY (TOPA) AND FUNDED BY MARY CROWLEY MEDICAL RESEARCH CENTER. IN 2012, THERE WERE 44 EMPLOYED BY TOPA ON BEHALF OF MARY CROWLEY MEDICAL RESEARCH CENTER.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 2</ReturnReference>
        <Explanation>DAVID SHANAHAN RUTH SHANAHAN PRESIDENT BOARD MEMBER FAMILY RELATIONSHIP DAVID SHANAHAN JOHN NEMUNAITIS PRESIDENT MEDICAL DIRECTOR BUSINESS RELATIONSHIP DAVID SHANAHAN MERRICK REESE PRESIDENT BOARD MEMBER SHAREHOLDERS OF GRADALIS JOHN NEMUNAITIS MERRICK REESE MEDICAL DIRECTOR BOARD MEMBER SHAREHOLDERS OF GRADALIS FAMILY RELATIONSHIP NADINE NEMUNAITIS VICE PRESIDENT FAMILY RELATIONSHIP</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 11</ReturnReference>
        <Explanation>IT IS PREVIEWED BY THE EXECUTIVE DIRECTOR AND/OR THE TREASURER PRIOR TO FILING.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>EACH OFFICER, DIRECTOR, AND KEY EMPLOYEE SHALL COMPLETE, SIGN AND DATE A DISCLOSURE FORM TO THE EXECUTIVE COMMITTEE OF THE BOARD OF DIRECTORS, ON AN ANNUAL BASIS, AND SHALL UPDATE IT IF AND WHEN ANY CHANGE IN INFORMATION OCCURS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>EXECUTIVE COMMITTEE REVIEWS AND APPROVES ALL EXECUTIVE, OFFICER AND KEY EMPLOYEE COMPENSATION ON AN ANNUAL BASIS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>THE GOVERNING DOCUMENTS, CONFLICTS OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC THROUGH THE ORGANIZATION'S WEBSITE AND UPON REQUEST AT ANY OF ITS FACILITIES.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>OVERSIGHT OF AUDIT</Identifier>
        <ReturnReference>FORM 990, PART XII, LINE 2C:</ReturnReference>
        <Explanation>COMMITTEE RESPONSIBLE FOR REVIEWING AND DISTRIBUTING AUDIT ON AN ANNUAL BASIS. NO CHANGE IN POLICY FROM PREVIOUS YEAR.</Explanation>
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    </IRS990ScheduleO>
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          <City>DALLAS</City>
          <State>TX</State>
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        </AddressUS>
        <EIN>273098612</EIN>
        <PrimaryActivities>CANCER RESEARCH</PrimaryActivities>
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        <EOYAssets>0</EOYAssets>
        <DirectControllingEntityName>
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          <City>DALLAS</City>
          <State>TX</State>
          <ZIPCode>75201</ZIPCode>
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