Low Dose IL-2 in the Treatment of Immune-associated ALS Syndrome

Inclusion Criteria:

• 18-70 years old;
• Clinically diagnosed with ALS syndrome, i.e., with ALS -like manifestations, consisting of a combination of upper and/or lower motor neuron damage;
• significant abnormalities with rheumatoid immune-related indicators, or diagnoses of immune-mediated ALS syndrome, including but not limited to multifocal motor neuropathy (MMN), Lewis-Sumner syndrome, and other ALS-like syndromes with an immune background that cannot be clearly classified;
• Poor treatment with conventional hormones or gamma globulin;
• Permitted concomitant treatment: oral prednisone or equivalent doses of other glucocorticoids (≤1.0mg/kg/d); Oral routine dose of immunosuppressants or immunomodulators, such as cyclophosphamide, tacrolimus, etc.; Routine oral doses such as too much force; Doses and types of accompanying therapeutic drugs should not be changed from the trial enrollment to the end of follow-up.
• For women of reproductive age, contraception for at least 2 weeks at the time of enrolment and negative urine HCG;
• Reasonable and effective contraceptive measures should be taken by subjects of childbearing age from the time of trial enrollment to the end of follow-up;
• Signed informed consent.

Exclusion Criteria:

• Allergic or intolerance to IL2;
• Receive non-standard treatment or use of excessive dose of glucocorticoids or gamma globulin intravenously within 2 months before enrollment;
• Vaccination within 6 months before enrolment or between enrolment and the end of follow-up;
• Peripheral venous white blood cells < 2000/mm3, lymphocytes < 600/mm3, platelets < 80,000 /mm3;
• Complicated with severe infection or inflammation, such as bacteremia, sepsis, etc.;
• Complicated blood system diseases, infectious diseases (hepatitis, HIV, tuberculosis, etc.), mental diseases, dementia, severe hypotension, substance abuse history, malignant tumor history, organ transplantation history, etc.;
• Severe liver, kidney, lung or heart dysfunction: heart failure (≥NYHA grade III), renal insufficiency (creatinine clearance ≤30ml/min), abnormal liver function (3 times the upper limit of normal >);
• Pregnant and lactating women;
• Currently participating in other clinical studies or using other investigational drugs.