iCP-NI - Safety, Tolerability, Pharmacokinetic, and Immunogenicity Study in Healthy Male and Female Subjects

Inclusion Criteria: Subjects must satisfy all of the following criteria at the screening visit unless otherwise stated: * Males or females, of any race, between 18 and 55 years of age, inclusive. * Body mass index between 18.0 and 32.0 kg/m2, inclusive. * In good health, determined by no clinically significant findings from medical history and clinical laboratory evaluations (congenital nonhemolytic hyperbilirubinemia \[eg, suspicion of Gilbert's syndrome based on total and direct bilirubin\] is acceptable) at screening and check in, from the physical examination performed between screening and check-in, and from the 12-lead ECG and vital signs measurements performed at screening, as assessed by the investigator (or designee). * Females of nonchildbearing potential, defined as permanently sterile (ie, due to hysterectomy, bilateral salpingectomy, bilateral oophorectomy, or Mullerian agenesis) or postmenopausal. Females will not be pregnant or lactating. Males will agree to use contraception. * Able to comprehend and willing to sign an informed consent form (ICF) and to abide by the study restrictions. Exclusion Criteria: Medical conditions * Significant history or clinical manifestation of any metabolic, allergic, dermatological, hepatic, renal, hematological, pulmonary, cardiovascular, gastrointestinal, neurological, respiratory, endocrine, or psychiatric disorder, as determined by the investigator (or designee). * History of significant hypersensitivity, intolerance, or allergy to any drug compound, food, or other substance, unless approved by the investigator (or designee). * Any of the following: 1. QTcF \>450 ms in males or \>470 ms in females, confirmed by calculating the mean of the original value and 2 repeats. 2. QRS duration \>110 ms, confirmed by calculating the mean of the original value and 2 repeats 3. PR interval \>220 ms, confirmed by calculating the mean of the original value and 2 repeats. 4. findings that would make QTc measurements difficult or QTc data uninterpretable. 5. history of additional risk factors for torsades de pointes (eg, heart failure, hypokalemia, family history of long QT syndrome). * Confirmed (eg, 2 consecutive measurements) systolic blood pressure \>140 or \<90 mmHg, diastolic blood pressure \>90 or \<50 mmHg, and pulse rate \>100 or \<40 beats per minute. * Positive hepatitis panel and/or positive human immunodeficiency virus test. Subjects whose results are compatible with prior immunization may be included at the discretion of the investigator. * Absolute neutrophil count, absolute lymphocyte count, or white blood cell count that is below the institution's lower limit of normal. Prior/concomitant therapy * Administration of a COVID 19 vaccine in the 30 days prior to dosing. * Use or intend to use any prescription medications/products within 14 days prior to dosing, unless deemed acceptable by the investigator (or designee). * Use or intend to use slow release medications/products considered to still be active within 14 days prior to check in, unless deemed acceptable by the investigator (or designee). * Use or intend to use any nonprescription medications/products including vitamins, minerals, and phytotherapeutic/herbal/plant derived preparations within 7 days prior to check in, unless deemed acceptable by the investigator (or designee). Prior/concurrent clinical study experience * Participation in a clinical study involving administration of an investigational drug (new chemical entity) in the past 30 days (or 5 half-lives, whichever is longer) prior to dosing. * Have previously completed or withdrawn from this study or any other study investigating iCP-NI, and have previously received iCP-NI. Diet and lifestyle * Alcohol consumption of \>21 units per week for males and \>14 units per week for females. One unit of alcohol equals 12 oz (360 mL) beer, 1½ oz (45 mL) liquor, or 5 oz (150 mL) wine. * Positive urine drug screen at screening or check-in or positive alcohol urine or breath test result at check in. * History of alcoholism or drug/chemical abuse within 2 years prior to check in. * Use of tobacco or nicotine containing products within 3 months prior to check in. * Ingestion of poppy seed containing foods or beverages within 7 days prior to check-in. Other exclusions * Receipt of blood products within 2 months prior to check in. * Donation of blood from 3 months prior to screening, plasma from 2 weeks prior to screening, or platelets from 6 weeks prior to screening. * Poor peripheral venous access. * Subjects who, in the opinion of the investigator (or designee), should not participate in this study.