Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase II/III, Randomized, Double-Blind, Parallel-Group, Placebo-Controlled, Multicenter Study to Evaluate the Safety and Efficacy of Rituximab in Adults With Primary Progressive Multiple Sclerosis
Brief Summary: This is a Phase II/III, randomized, double-blind, parallel group, placebo controlled, multicenter study to evaluate the safety and efficacy of rituximab in adults with PPMS. The study will enroll approximately 435 subjects at up to 60 sites in the United States and Canada.


Options:
A: Inclusion Criteria:

* Definitive diagnosis of PPMS
* Disease duration of ≥ 1 year
* EDSS at baseline between 2.0 and 6.5 points, inclusive
* Score of ≥ 2.0 on the Functional Systems (FS) scale for the pyramidal system or gait that is due to lower extremity findings
* Presence of at least one of the following in a CSF specimen obtained during the screening period and analyzed by the central laboratory or results from a CSF sample obtained during the previous 24 months:
* For subjects of reproductive potential (males and females), use of a reliable means of contraception (e.g., hormonal contraceptive, patch, vaginal ring, intrauterine device, physical barrier) during study treatment and for 1 year following the last dose of study drug

Exclusion Criteria:

* Pregnancy or lactation
* Incompatibility with MRI
* Lack of peripheral venous access
* History of severe allergic or anaphylactic reactions to humanized or murine monoclonal antibodies
* Known active bacterial, viral, fungal, mycobacterial, or other infection (including atypical mycobacterial disease, but excluding fungal infections of nail beds or recurrent herpes zoster or simplex infections) or any major episode of infection requiring hospitalization or treatment with IV antibiotics within 30 days prior to screening or oral antibiotics within 14 days prior to screening
* History or presence of recurrent or chronic infection (e.g., hepatitis B or C, HIV, syphilis)
* History of cancer, including solid tumors and hematologic malignancies (except resected and fully resolved cutaneous basal cell and squamous cell carcinomas)
* History of alcohol or drug abuse within 6 months prior to screening
* History of or currently active primary or secondary immunodeficiency
* Significant cardiac or pulmonary disease (including obstructive pulmonary disease)
* Presence of other significant, uncontrolled cardiovascular, pulmonary, renal, hepatic, endocrine, or gastrointestinal disease that might interfere with a subject's ability to participate and to complete approximately 2.5 years of study participation
* History or presence of MS relapse or exacerbation
* History or presence of vascular disease potentially affecting the brain or spinal cord (e.g., stroke, transient ischemic attack, carotid stenosis, aortic aneurysm, intracranial aneurysm, hemorrhage, arteriovenous malformation)
* History or presence of myelopathy due to spinal cord compression by disk or vertebral disease
* History of severe, clinically significant central nervous system trauma (e.g., cerebral contusion, spinal cord compression)
* History of intracranial or intraspinal tumor (e.g., meningioma, glioma)
* History or presence of potential metabolic cause of myelopathy or encephalopathy (e.g., vitamin B12 deficiency, thyroid abnormalities)
* History or presence of infectious causes of myelopathy (e.g., syphilis, Lyme disease, human T-cell lymphotropic virus type 1 \[HTLV-1\], or herpes zoster myelopathy)
* History of genetically inherited progressive CNS degenerative disorder (e.g., X-linked adrenoleukodystrophy, hereditary spastic paraparesis)
* Neuromyelitis optica
* History or presence of systemic autoimmune disorders potentially causing progressive neurologic disease (e.g., lupus, anti-phospholipid antibody syndrome, Sj�gren syndrome, Beh�et disease)
* History or presence of sarcoidosis
* Previous treatment with rituximab (MabThera(R)/Rituxan(R))
* Previous treatment with lymphocyte-depleting therapies (e.g., cyclophosphamide, Campath(R), anti-CD4, cladribine, total body irradiation, bone marrow transplantation), except mitoxantrone, which should not be used 12 months prior to randomization
* Treatment with an investigational agent within 90 days or 5 half-lives of the investigational drug (whichever is longer) prior to randomization
* Receipt of a live vaccine within 30 days prior to randomization
* Systemic corticosteroid therapy within 30 days prior to randomization
* Treatment with IFN-\&#x3B2;, glatiramer acetate, IVIg, or plasmapheresis within 60 days prior to randomization
* Treatment with non-lymphocyte-depleting immunosuppressive therapies (e.g., azathioprine, mycophenolate mofetil \[MMF\], cyclosporine) within 90 days prior to randomization
* Statins or hormone replacement therapy started within 30 days prior to randomization
B: Inclusion Criteria:

The target population of the survey will include:

* clinicians
* epidemiologist
* decision scientists
* health research methodologists
* experts in health technology assessment (HTA)
* and members of guideline working groups
* members from the general public

Exclusion Criteria:

• Prior participation in the survey
C: Inclusion Criteria:

1. Patients must have a confirmed and documented PPMS diagnosis as defined by the 2010 Revised McDonald criteria
2. Baseline magnetic resonance imaging (MRI) showing lesions consistent with PPMS in either or both brain and spinal cord
3. Patients must have an Expanded Disability Status Scale (EDSS) score of 3 to 6.5, inclusive, at both screening and baseline visits
4. Documented evidence of clinical disability progression in the 2 years prior to screening.
5. Functional System Score (FSS) of \> or equal 2 for the pyramidal system or gait impairment due to lower extremity dysfunction
6. Patients must be between 25 to 55 years of age, inclusive
7. Women of child-bearing potential must practice an acceptable method of birth control for 30 days before taking the study drug, and 2 acceptable methods of birth control during all study duration and until 30 days after the last dose of treatment is administered.
8. Patients must sign and date a written informed consent prior to entering the study.
9. Patients must be willing and able to comply with the protocol requirements for the duration of the study.

Exclusion Criteria:

1. Patients with history of any multiple sclerosis (MS) exacerbations or relapses, including any episodes of optic neuritis.
2. Progressive neurological disorder other than PPMS.
3. Any MRI record showing presence of cervical cord compression.
4. Baseline MRI showing other findings (including lesions that are atypical for PPMS) that may explain the clinical signs and symptoms.
5. Relevant history of vitamin B12 deficiency.
6. Positive human T-lymphotropic virus Type I and II (HTLV-I/II) serology.
7. Use of experimental or investigational drugs in a clinical study within 24 weeks prior to baseline. Use of a currently marketed drug in a clinical study within 24 weeks prior to baseline would not be exclusionary, provided no other exclusion criteria are met.
8. Use of immunosuppressive agents, or cytotoxic agents, including cyclophosphamide and azathioprine within 48 weeks prior to baseline.
9. Previous treatment with fingolimod (GILENYA®, Novartis), dimethyl fumarate (TECFIDERA®, Biogen Idec Inc), glatiramer acetate (COPAXONE®, Teva), interferon-β (either 1a or 1b), intravenous immunoglobulin, or plasmapheresis within 8 weeks prior to baseline.
10. Use of teriflunomide (AUBAGIO®, Sanofi) within 2 years prior to baseline, except if active washout (with either cholestyramine or activated charcoal) was done 2 months or more prior to baseline.
11. Prior use of monoclonal antibodies ever, except for:

    1. natalizumab (TYSABRI®, Biogen Idec Inc), if given more than 24 weeks prior to baseline AND the patient is John Cunningham (JC) virus antibody test negative (as per medical history)
    2. rituximab, ocrelizumab, or ofatumumab, if B cell count (CD19, as per medical history) is higher than 80 cells/μL
12. Use of mitoxantrone (NOVANTRONE®, Immunex) within 5 years prior to screening. Use of mitoxantrone \>5 years before screening is allowed in patients with normal ejection fraction and who did not exceed the total lifetime maximal dose.
13. Previous use of laquinimod.
14. Chronic (eg, more than 30 consecutive days or monthly dosing, with the intent of MS disease modification) systemic (intravenous, intramuscular or oral) corticosteroid treatment within 8 weeks prior to baseline.
15. Previous use of cladribine or alemtuzumab (LEMTRADA®, Sanofi).
16. Previous total body irradiation or total lymphoid irradiation.
17. Previous stem cell treatment, cell-based treatment, or bone marrow transplantation of any kind.
18. Patients who underwent endovascular treatment for chronic cerebrospinal venous insufficiency (CCSVI) within 12 weeks prior to baseline.
19. Use of moderate/strong inhibitors of cytochrome P450 (CYP) 3A4 within 2 weeks prior to baseline.
20. Use of inducers of CYP3A4 within 2 weeks prior to baseline.
21. Pregnancy or breastfeeding.
22. Serum levels ≥3× upper limit of the normal range (ULN) of either alanine aminotransferase (ALT) or aspartate aminotransferase (AST) at screening.
23. Serum direct bilirubin which is ≥2×ULN at screening.
24. Patients with a clinically significant or unstable medical or surgical condition that (in the opinion of the Investigator) would preclude safe and complete study participation, as determined by medical history, physical examinations, electrocardiogram (ECG), laboratory tests or chest X-ray.
25. A known history of hypersensitivity to gadolinium (Gd).
26. Glomerular filtration rate (GFR) \< or equal 60 mL/min at screening visit.
27. Inability to successfully undergo MRI scanning, including claustrophobia.
28. Known drug hypersensitivity that would preclude administration of laquinimod, such as hypersensitivity to mannitol, meglumine or sodium stearyl fumarate.
D: Inclusion Criteria:

General

1. sign written informed consent prior to participating in the study
2. 25 through 65 years of age inclusive
3. females of childbearing potential must:

   * have a negative pregnancy test at Baseline (prior to randomization) and
   * use simultaneously two forms of effective contraception during the treatment and 3-months after discontinuation of study medication

Primary Progressive Multiple sclerosis.

1. diagnosis of primary progressive multiple sclerosis (according to the 2005 Revised McDonald criteria):
2. time since first reported symptoms between 2 and 10 years
3. evidence of clinical disability progression in the 2 years prior to Screening
4. disability status at Screening

   * EDSS score of 3.5-6.0 inclusive
   * pyramidal functional system score of 2 or more
   * 25'TWT less than 30 seconds

Extension study Inclusion criteria

* Patients initially randomized to fingolimod 1.25 mg or placebo as part of the first study cohort, were to have completed at least 3 years on study drug treatment at the time of extension study initiation.
* Patients initially randomized to fingolimod 0.5 mg or placebo as part of the second study cohort, were to have continued on study drug treatment until such time as the last ongoing patient enrolled in the study had reached 3 years in study

Exclusion Criteria:

PPMS specific:

* History of relapses/attacks
* Progressive neurological disorder other than PPMS
* Pure cerebellar syndrome or pure visual progressive syndrome or pure
* cognitive progressive syndrome
* Presence of spinal cord compression at screening MRI
* Relevant history of vitamin B12 deficit
* Evidence of syphilis or borreliosis at Screening

Cardiovascular conditions:

* Myocardial infarction within the past 6 months or current unstable ischemic heart disease
* History of angina pectoris due to coronary spasm or history of Raynaud's phenomenon
* Severe cardiac failure or cardiac arrest
* History of symptomatic bradycardia
* Resting pulse \<55 bpm pre-dose
* History of sick sinus syndrome or sino-atrial heart block
* History or presence of second and third degree AV block or an increase QT interval (QTc\>440 ms)
* Arrythmia requiring treatment with class III antiarrythmic drugs
* History of positive tilt test from workout of vasovagal syncope
* Hypertension, not controlled with medication

Pulmonary:

* Severe respiratory disease or pulmonary fibrosis
* TB
* Abnormal X-ray, suggestive of active pulmonary disease
* Abnormal PFT: \<70% of predicted for FEV1 and FVC; \<60% for DLCO
* Patients receiving chronic (daily) therapies for asthma

Hepatic:

* Known history of alcohol abuse, chronic liver or biliary disease
* Total or conjugated Brb \>ULN, unless in context of Gilbert's syndrome
* AP \>1.5xULN; ALT/AST \>2xULN; GGT\>3xULN

Other:

* History of chronic disease of the immune system other than MS
* Malignancy (other than successfully treated SCC or BCC)
* Diabetes Mellitus
* Macular Edema present at screening
* HIV, Hepatitis C or B, other active infection
* History of total lymphoid irradiation or bone marrow transplantation
* Serum creatinine \>1.7 mg/dl
* WBC \<3500 cells/mm3
* Lymphocyte count \<800 cells/mm3
* History of substance abuse or any other factor that may interfere with subject ability to cooperate and comply with the study procedures
* Unable to undergo MRI scans
* Participation in any therapeutical clinical research study in the 6 months prior to randomization
* Pregnant or lactating women
* Drugs requiring wash-out period:

  3 months:
  * Systemic corticosteroids or ACTH
  * INF-beta

    6 months:
  * Immunosuppressive medication
  * Immunoglobulins
  * Monoclonal antibodies
* Drugs that exclude participation in the study:
* Cladribine
* Cyclophosphamide
* Mitoxantrone (except: patients who received a cumulative dose of no more than 60mg/m2 more than 5 years ago could enter the study)

Extension study Exclusion criteria

-Patients were not eligible for enrollment in the extension study if they had any of the following key exclusion criteria at the extension study Baseline visit: active chronic immune system disease other than MS (or stable disease treated with immune therapy); known immunodeficiency syndrome; active infection; uncontrolled diabetes mellitus; macularedema; treatment with Class Ia or III antiarrhythmic drugs; any of the specified cardiac, pulmonary, or hepatic conditions; or any medically unstable condition

Answer: A