Any serious concurrent condition that could, in the investigator’s opinion, significantly interfere with completion of study procedures or protocol compliance Any serious, unstable medical or psychiatric condition that would prevent, (as judged by the investigator) the subject properly providing informed consent or any condition which would jeopardize compliance with the protocol Concurrent condition that in the investigator’s opinion would jeopardize compliance with the protocol Uncontrolled or progressive systemic disease or other concurrent condition which in the Investigator’s opinion makes HD-MTX an undesirable treatment option for the patient or would jeopardize compliance Active bleeding diatheses, which in the investigator’s opinion makes it undesirable for the patient to participate in the trial or which would jeopardize compliance with the protocol Signs or symptoms of organ failure, major chronic illnesses other than cancer, or any concomitant medical or social conditions which, in the opinion of the investigator, make it undesirable for the patient to participate in the study, or which could jeopardize compliance with the protocol Any serious and/or unstable pre-existing medical, psychiatric, or other condition (e.g., severe hepatic impairment) or current unstable or uncompensated respiratory or cardiac conditions which makes it undesirable for the patient to participate in the study or which could jeopardize compliance with the protocol. No evidence of severe or uncontrolled other systemic disease or any concurrent condition which in the investigator’s opinion makes it undesirable for the subject to participate in the trial or which would jeopardize compliance with the protocol Concurrent condition that in the investigator's opinion would jeopardize compliance with the protocol or would impart excessive risk associated with study participation that would make it inappropriate for the patient to be enrolled. Any concurrent condition which in the investigator’s opinion makes it undesirable for the subject to participate in this trial or which would jeopardize compliance with the protocol Subjects with any concurrent condition that, in the investigator's opinion, would jeopardize the safety of the subject or compliance with the protocol Evidence of severe or uncontrolled systemic disease or any concurrent condition which in the Investigator’s opinion makes it undesirable for the patient to participate in the trial or which would jeopardize compliance with the protocol Has any condition that, in the opinion of the investigator, might jeopardize the safety of the patient or interfere with protocol compliance Significant psychiatric disorder and any other reason in the Investigator’s opinion that would jeopardize protocol compliance or compromise the patient’s ability to give informed consent Significant psychiatric disorder and any other reason in the Investigator’s opinion that would jeopardize protocol compliance or compromise the patient’s ability to give informed consent Subjects with any concurrent condition that, in the investigator’s opinion, would jeopardize the safety of the subject or compliance with the protocol Evidence of severe or uncontrolled systemic disease or any concurrent condition which in the investigator’s opinion makes it undesirable for the patient to participate in the trial or which could jeopardize compliance with the protocol Unstable or clinically significant concurrent medical condition that would, in the opinion of the investigator, jeopardize the safety of a subject and/or compliance with the protocol. Evidence of severe or uncontrolled systemic disease or any concurrent condition that, in the opinion of the Investigator or Medical Monitor, makes it undesirable for the subject to participate in the study or that would jeopardize compliance with the protocol. Subjects with pre-existing well-controlled diabetes are not excluded. Has any condition that, in the opinion of the investigator, might jeopardize the safety of the subject or interfere with protocol compliance. Any condition that, in the opinion of the investigator, might jeopardize the safety of the subject or interfere with protocol compliance. Uncontrolled intercurrent illness or any concurrent condition that, in the Investigator's opinion, would jeopardize the safety of the patient or compliance with the protocol Any other concurrent condition that in the investigator’s opinion would jeopardize compliance with the protocol Any other concurrent condition that in the investigator's opinion would jeopardize compliance with the protocol Unstable or clinically significant concurrent medical condition that would, in the opinion of the investigator, jeopardize the safety of a subject and/or compliance with the protocol Any concurrent condition which in the investigator’s opinion makes it undesirable for the subject to participate in this trial or which would jeopardize compliance with the protocol Unstable or clinically significant concurrent medical condition that would, in the opinion of the investigator, jeopardize the safety of a patient and/or their compliance with the protocol. Patients with any clinically significant medical condition which, in the opinion of the investigator, makes it undesirable for the patient to participate in the study or which could jeopardize compliance with protocol requirements including, but not limited to: ongoing or active infection, significant uncontrolled hypertension, or severe psychiatric illness/social situations Have signs or symptoms of end organ failure, major chronic illnesses other than cancer, or any severe concomitant conditions which, in the opinion of the investigator, make it undesirable for the patient to participate in the study, or which could jeopardize compliance with the protocol Concurrent medical condition that would jeopardize compliance. Evidence of severe or uncontrolled systemic disease or any concurrent condition – including, but not limited to symptomatic congestive heart failure, unstable angina pectoris, unstable hypertension, seizure disorder, or psychiatric illness – which in the Investigator’s opinion makes it undesirable for the patient to participate in the trial or which would jeopardize compliance with the protocol Any concurrent condition which in the investigator's opinion makes it undesirable for the patient to participate in the trial or which would jeopardize compliance with the protocol. Have signs or symptoms of organ failure, major chronic illnesses other than cancer, or any concomitant medical or social condition that, in the opinion of the investigator, make it undesirable for the patient to participate in the study or that could jeopardize compliance with the protocol. Subjects with any concurrent condition that, in the investigator’s opinion, would jeopardize the safety of the subject or compliance with the protocol Patients must not have any concurrent condition which in the Investigator’s opinion makes it inappropriate for the patient to participate in the trial or which would jeopardize compliance with the protocol Any condition that in the opinion of the investigator raises concerns about protocol compliance Unstable or clinically significant concurrent medical condition that would, in the opinion of the investigator or medical monitor, jeopardize the safety of a subject and/or their compliance with the protocol. Evidence of severe or uncontrolled systemic disease or any concurrent condition which in the investigator’s opinion makes it undesirable for the patient to participate in the trial or which would jeopardize compliance with the protocol Any other concurrent condition that in the investigator's opinion would jeopardize compliance with the protocol Any other concurrent condition that in the investigator's opinion would jeopardize compliance with the protocol Concurrent condition that in the investigator's opinion would jeopardize compliance with the protocol or would impart excessive risk associated with study participation that would make it inappropriate for the patient to be enrolled.