Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Multinational, Multicenter, Randomized, Double-blind, Parallel-group, Placebo-controlled Study, to Evaluate the Safety, Tolerability and Efficacy of Daily Oral Administration of Laquinimod 0.6 mg in Subjects With RRMS
Brief Summary: Determination the efficacy of daily oral treatment with laquinimod 0.6 mg capsules as compared to placebo in subjects with Relapsing Remitting Multiple Sclerosis (RRMS).


Options:
A: Inclusion Criteria:

1. Subjects must have a confirmed and documented MS diagnosis as defined by the Revised McDonald criteria \[Ann Neurol 2005: 58:840-846\], with a relapsing-remitting disease course.
2. Subjects must be ambulatory with converted Kurtzke EDSS score of 0-5.5.
3. Subjects must be in a stable neurological condition and free of corticosteroid treatment \[intravenous (iv), intramuscular (im) and/or per os (po)\] 30 days prior to screening (month -1).
4. Subjects must have had experienced one of the following:

   * At least one documented relapse in the 12 months prior to screening
   * At least two documented relapses in the 24 months prior to screening
   * One documented relapse between 12 and 24 months prior to screening with at least one documented T1-Gd enhancing lesion in an MRI performed within 12 months prior to screening.
5. Subjects must be between 18 and 55 years of age, inclusive.
6. Subjects must have disease duration of at least 6 months (from the first symptom) prior to screening.
7. Women of child-bearing potential must practice an acceptable method of birth control \[acceptable methods of birth control in this study include: surgical sterilization, intrauterine devices, oral contraceptive, contraceptive patch, long-acting injectable contraceptive, partner's vasectomy or double-barrier method (condom or diaphragm with spermicide).
8. Subjects must be able to sign and date a written informed consent prior to entering the study
9. Subjects must be willing and able to comply with the protocol requirements for the duration of the study.

Exclusion Criteria:

1. Subjects with progressive forms of MS
2. An onset of relapse, unstable neurological condition or any treatment with corticosteroids \[intravenous (iv), intramuscular (im) and/or per os (po)\] or ACTH between month -1 (screening) and 0 (baseline).
3. Use of experimental or investigational drugs, and/or participation in drug clinical studies within the 6 months prior to screening.
4. Use of immunosuppressive including Mitoxantrone (Novantrone®) or cytotoxic agents within 6 months prior to the screening visit.
5. Previous use of either of the following: natalizumab (Tysabri®), cladribine, laquinimod.
6. Previous treatment with glatiramer acetate (Copaxone®) Interferon-β (either 1a or 1b) or IVIG within 2 months prior to screening visit.
7. Systemic corticosteroid treatment of ≥30 consecutive days duration within 2 months prior to screening visit.
8. Previous total body irradiation or total lymphoid irradiation.
9. Previous stem cell treatment, autologous bone marrow transplantation or allogenic bone marrow transplantation.
10. A known history of tuberculosis.
11. Acute infection two weeks prior to baseline visit.
12. Major trauma or surgery two weeks prior to baseline
13. A history of vascular thrombosis (excluding catheter-site superficial venous thrombophlebitis).
14. A carrier state of factor V Leiden mutation (either homo- or heterozygous) as disclosed at screening.
15. Positive screening test for Hepatitis B surface antigen, Hepatitis C antibody, or HIV antibody as disclosed at screening visit.
16. Use of potent inhibitors of CYP3A4 within 2 weeks prior to baseline visit (1 month for fluoxetine) see detailed list in Appendix 5
17. Use of amiodarone within 2 years prior to screening visit.
18. Pregnancy or breastfeeding.
19. Subjects with a clinically significant or unstable medical or surgical condition that would preclude safe and complete study participation, as determined by medical history, physical examinations, ECG, laboratory tests or chest X-ray. Such conditions may include:

    * A cardiovascular or pulmonary disorder that cannot be well-controlled by standard treatment permitted by the study protocol.
    * A gastrointestinal disorder that may affect the absorption of study medication.
    * Renal or metabolic diseases.
    * Any form of chronic liver disease, including known non-alcoholic steatohepatitis.
    * A ≥2xULN serum elevation of either of the following at screening: ALT, AST or direct bilirubin
    * A QTC interval (obtained from either 2 ECG recordings at screening or from the mean value calculated from 3 measurements at baseline visit) which is \>450msec.
    * A family history of Long- QT syndrome.
    * A history of drug and/or alcohol abuse.
    * Major psychiatric disorder.
20. A known history of sensitivity to Gd.
21. Inability to successfully undergo MRI scanning.
22. Known drug hypersensitivity that would preclude administration of laquinimod, such as hypersensitivity to: mannitol, meglumine or sodium stearyl fumarate.

Exclusion Criteria:

1. Subjects who suffer from any form of progressive MS.
2. Any condition which the investigator feels may interfere with participation in the study.
3. Subjects with a clinically significant or unstable medical or surgical condition that would preclude safe and complete study participation,
4. Subjects who received any investigational medication, immunosuppressives or cytotoxic agents within 6 months prior to screening
5. Previous treatment with immunomodulators within two months prior to screening
6. Pregnancy or breastfeeding.
B: Core Study

Inclusion Criteria:

* Diagnosis of relapsing multiple Sclerosis (MS)
* Patients with at least two documented relapses in the previous 2 years or one documented relapse in the last year
* Patients with an Expanded Disability Status Scale (EDSS) score of 0-6

Extension Study

* A positive Gd-enhanced MRI scan at screening (in case the first MRI scan obtained at screening was negative, a second scan could have been obtained 1 month later)
* Neurologically stable with no evidence of relapse within 30 days prior to randomization,or during the Screening and Baseline periods.
* Female patients either post-menopausal, surgically incapable of bearing children, or practicing an acceptable method of birth control. Females of childbearing potential with a negative pregnancy test at baseline prior to entry into the treatment period.

Exclusion Criteria:

Core Study

* Patients with other chronic disease of the immune system, malignancies, pulmonary or heart disease, etc
* Pregnant or nursing women

Extension Study

* Patients who had permanently discontinued study drug prior to the Month 6 visit of the core study
* Patients with diabetes mellitus (to reduce the risk of ME), and therefore ongoing patients with diabetes mellitus or who developed diabetes mellitus were discontinued from the study)

Other protocol-defined inclusion/exclusion criteria may apply
C: * INCLUSION CRITERIA:

MS as defined by the modified McDonald s criteria (Polman, Reingold et al. 2005)

SP-MS as documented by lack of MS relapse for the past 1 year and non-remitting/sustained (\> 3 months) progression of disability

Age 18-65, inclusive, at the time of the first screening baseline visit

EDSS 3.0 to 7.0, inclusive, at the time of the first screening baseline visit

Able to provide informed consent

Willing to participate in all aspects of trial design and follow-up

Lack of CEL on all MRIs performed within the last 12 months or if patient has CEL, then documentation that they tried and failed or could not tolerate FDA approved disease modifying therapies (DMTh)

Not receiving any DMTh (such as IFN-beta preparation, glatiramer acetate, corticosteroid, natalizumab, fingolimod, immunosuppressive agents or experimental therapeutics) for a period of at least 1 month before enrollment in the study, allowing for at least a 1-year

period off therapy prior to the first study dose

Agreeing to commit to the use of a reliable/accepted method of birth control (i.e. hormonal contraception (birth control pills, injected hormones, vaginal ring), intrauterine device, barrier methods with spermicide (diaphragm with spermicide, condom with spermicide) or they have undergone surgical sterilization (such as hysterectomy, tubal ligation, or vasectomy)) during enrollment in the study and through 12 months after the last dose of study drug

EXCLUSION CRITERIA:

RR-MS or PP-MS

Evidence of clearly documented MS relapse within the last 1 year

Alternative diagnoses that can explain neurological disability and MRI findings

Clinically significant medical disorders that, in the judgment of the investigators could cause CNS tissue damage, limit its repair, expose the patient to undue risk of harm or prevent the patient from completing the study (such as, but not limited to cerebrovascular disease, ischemic cardiomyopathy, clotting disorder, brittle diabetes, neurodegenerative disorder)

Pregnant or breastfeeding female

History or sign of congenital or acquired immunodeficiency or chronic infections, such as HIV/AIDS, Hepatitis A, B or C, HTLV-1 carrier and others that would expose patient to risks of pathogen reactivation associated with rituximab treatment

Abnormal screening/baseline blood tests exceeding any of the limits defined below:

1. Serum alanine transaminase or aspartate transaminase levels which are greater than three times the upper limit of normal values.
2. Total white blood cell count \< 3 000/mm(3)
3. Platelet count \< 85 000/mm(3)
4. Serum creatinine level \> 2.0 mg/dl and eGFR (glomerular filtration rate) \< 60
5. Serological evidence of HIV, HTLV-1 or active hepatitis A, B or C
6. Positive pregnancy test
7. Positive CSF or serum quantitative PCR for JC virus on CSF collected from the baseline spinal tap (test will be performed by CLIA certified laboratory of Gene Major, NINDS)
8. Total serum IgG \< 600mg/dl (nl 642-1730mg/dl) or total serum IgM \< 30mg/dl (nl 34-342mg/dl) as these Ig deficiencies would suggest underlying abnormalities with B cell function/maturation
D: Inclusion Criteria:

* Prior history of relapsing remitting MS
* SPMS defined as progressive increase of disability over at least 6 months
* EDSS score of 3.0 to 6.5
* No relapse of corticosteroid treatment within 3 months

Exclusion Criteria:

* Women of child bearing potential must use reliable forms of contraception.
* Diagnosis of Macular edema during screening period
* Any medically unstable condition determined by investigator.
* Unable to undergo MRI scans
* Hypersensitivity to any study drugs or drugs of similar class

Answer: A