Phase II/III Seamless Clinical Study of MG-K10 Humanized Monoclonal Antibody Injection in Treatment of Seasonal Allergic Rhinitis

Exclusion Criteria

• •Allergy to the study drug or its excipients;
• •Travel plans for 48 hours or more from known pollen areas during the screening/induction and treatment periods (visit 5);
• •The subject's exposure to allergens in his or her home or work environment may have changed significantly during the trial, which the investigator determines may affect the efficacy evaluator;
• •Subjects with limited outdoor activities during the day were defined as those who did not have any outdoor activities during the day for 1 or 4 days per week.
• •·Patients who have previously received anti-interleukin-4 receptor alpha (IL-4Rα) monoclonal antibody drugs (such as dupriuzumab) for Allergic Rhinitis (AR) have poor response (such as treatment failure or treatment intolerance);
• •Use of antihistamines within 4 days prior to randomization;
• •Leukotriene receptor antagonists and hypertrophic cell membrane stabilizers were used within 1 week before randomization;
• •Received medium - and short-acting Systemic Crticosteroids (SCS, including oral, intravenous and intramuscular glucocorticoids) and Chinese medicine for AR treatment (systemic Chinese medicine preparation) within 4 weeks before randomization. Had received long-acting SCS (such as triamcinolone olone injection) within 6 weeks prior to randomization, or planned to receive these medications during the study period;
• •Participants with asthma who began inhaled glucocorticoid therapy within the first 4 weeks of randomization.
• •Stable dose inhaled glucocorticoids were used for at least 4 weeks and evaluated before randomization
• •The dose of inhaled glucocorticoids was maintained during the study period, while the dosage of inhaled glucocorticoids was ≤1000 μg/ day of fluticasone propionate or equivalent doses of other inhaled glucocorticoids
• •Randomized 8 weeks or 5 Systemic immunosuppressants (including but not limited to methotrexate, cyclosporine, mycophenolate, tacrolimus, penicillamine, sulfasulazopyridine, hydroxychloroquine, azathioprine, cyclophosphamide) have been used within a half-life (whichever is longer) to treat inflammatory or autoimmune diseases (e.g., rheumatoid arthritis, inflammatory bowel disease, primary biliary cirrhosis, systemic disease) Lupus erythematosus, multiple sclerosis, etc);
• •random or 10 weeks before 5 within the half-life of longer (in time) received anti IL - 4 r alpha monoclonal antibody, Thymic Stromal lymphocytes (Thymic Stromal Lymphopoietin, TSLP) monoclonal antibody, anti-IGE monoclonal antibody, other monoclonal antibody or other biologic agent therapy;
• •Participated in MG-K10 clinical trials;
• •Live/attenuated vaccine received within 3 months prior to randomization or during the planned study period; Subjects who started Immunotherapy \[including Intravenous Immunoglobin (IVIG) therapy or Specific Immunotherapy (SIT) therapy\] within 6 months before randomization, Participants who plan to begin immunotherapy during the study;
• •Had received any nasal or sinus surgery within 1 year prior to randomization;
• •History of vital organ transplantation (e.g., heart, lung, kidney, liver) or hematopoietic stem cell/bone marrow transplantation
• •Other nasal comorbiditis or co-occurring diseases/conditions (such as acute/chronic sinusitis, nasal polyps, deviation of nasal septum, drug-induced rhinitis, cerebrospinal fluid rhinorrhea, nasal postoperative status within 1 year, etc.) were present at the time of screening and could affect the efficacy evaluation as assessed by the investigators;
• •Acute sinusitis, nasal infection, or upper respiratory tract infection during the screening/induction period or within 2 weeks prior to screening;
• •Have malignant or benign tumors in the nasal cavity;
• •Screening for infections requiring treatment with systemic antimicrobials, antivirals, antifungals, antiparasites or antigenics within 7 days prior to the visit;
• •Patients with Perennial Allergic Rhinitis (PAR) who are allergic to pet hair (if the subject is currently free of pet hair contact) may be included. PAR subjects who are allergic to other indoor allergens may be included);
• •Have a history of lymphoproliferative diseases, or have had or are present with malignant tumors within 5 years prior to screening (except for skin squamous cell carcinoma in situ, basal cell carcinoma, and cervical carcinoma in situ after thorough treatment without any signs of recurrence);
• •Have a history or evidence of high risk cardiovascular disease
• •Have posterior subcapsular cataracts or glaucoma, or any other eye condition that may affect the evaluation of eye symptoms, or related conditions listed below
• •Active TB infection is present or suspected;
• •Presence or suspected worm infection within 6 months;
• •A history of severe herpes virus infection, such as herpes encephalitis, disseminated herpes, etc.
• •Patients with severe diseases of the central nervous system, respiratory system, liver, kidney, gastrointestinal, urinary, endocrine, or blood systems that the investigator believes may affect the efficacy and safety of the subject;
• •Known or suspected immunosuppressed individuals, including, but not limited to, a history of invasive opportunistic infections (e.g., tuberculosis, histoplasmosis, listeriosis, coccidioidosis, pulmonary cyst disease, aspergillosis), even if the infection has resolved; Or unusual frequent, recurrent, or long-term infections (as determined by the investigator)
• •The presence of any significant laboratory anomalies
• •Pregnant or lactating women, or those with a positive pre-randomized serum pregnancy test
• •According to the judgment of the researcher, it is not suitable to participate in this researcher for other reasons.