A Study to Determine Pharmacokinetic Characteristics of LY03010 Versus INVEGA SUSTENNA® in Schizophrenia Patients

Inclusion Criteria:

1. Capable of giving informed consent and complying with study procedures;

2. Have an identified support person (e.g., family member, case worker, social worker)
considered reliable by the Investigator to help ensure compliance with study visits
and to alert staff of any issues of concern;

3. Have a stable place of residence for the 3 months prior to screening and throughout
the study;

4. Male or female ≥18 to ≤65 years of age who meets diagnostic criteria for schizophrenia
according to the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition
(DSM-V) for at least 1 year before screening;

5. Be on a stable dose of oral antipsychotic medication(s) other than risperidone,
paliperidone, clozapine, ziprasidone, or thioridazine for at least 4 weeks prior to
screening;

6. Be clinically stable based on clinical assessments and a Positive and Negative
Syndrome Scale (PANSS) total score ≤70 as well as a PANSS HATE (hostility, anxiety,
tension and excitement) subtotal score <16 at screening;

7. Clinical Global Impression-Severity (CGI-S) score of 1 to 4, inclusive;

8. Body mass index (BMI) ≥17.0 and ≤37 kg/m2; body weight ≥50 kg;

9. Creatinine level within the normal range;

10. All female patients (childbearing potential and non-childbearing potential) must have
a negative pregnancy test result at both screening and baseline. Female patients must
meet 1 of the following 3 conditions: (i) postmenopausal for at least 12 months
without an alternative medical cause, (ii) surgically sterile (hysterectomy, bilateral
oophorectomy, bilateral salpingectomy, or bilateral tubal occlusion) based on patient
report, or (iii) if of childbearing potential (WOCBP), practicing or agree to practice
a highly effective contraception method of birth control. Highly effective methods of
birth control include an intrauterine device (IUD), intrauterine hormone-releasing
system (IUS), and contraceptives (oral, skin patches, or implanted or injectable
products) using combined or progestogen-only hormonal contraception associated with
inhibition of ovulation. A vasectomized male partner is an acceptable birth control
method if the vasectomized partner is the sole sexual partner of the female patient
and the vasectomized partner has received medical confirmation of surgical success.
Highly effective methods of birth control must be used for at least 14 days prior to
study drug dosing, throughout the study, and for another 80 days after the
end-of-treatment (EOT) visit (or at least 200 days after the dose, whichever is
longer) to minimize the risk of pregnancy;

11. Sexually active fertile male patients must be willing to use acceptable contraception
methods (such as double barrier methods of a combination of male condom with either
cap, diaphragm or sponge with spermicide) from study drug dosing, throughout the
study, and for another 80 days after the EOT visit (or at least 200 days after the
dose, whichever is longer) if their partners are women of childbearing potential.

Exclusion Criteria:

1. Primary and active DSM-V Axis I diagnosis other than schizophrenia or schizoaffective
disorder;

2. Patients who meet DSM-V criteria for substance abuse (moderate or severe) with the
exception of caffeine or nicotine in the past 6 months prior to screening, or test
positive for a drug of abuse or alcohol at screening or baseline (except positive
findings that can be accounted for by documented prescriptions used as prescribed by a
treating physician as a part of the treatment for the patient's psychiatric illness);

3. History of treatment resistance, defined as failure to respond to 2 adequate treatment
regimens (minimum of 4 weeks at the patient's maximum tolerated dose) of different
antipsychotic medications;

4. Known or suspected hypersensitivity or intolerance of risperidone, paliperidone, or
any of their excipients (oral risperidone tolerability test will be completed during
the screening period, approximately 14 days prior to dosing, for patients without
documented evidence [medical record or written statement from a licensed medical
practitioner who has treated the patient] of tolerating risperidone or paliperidone,
and patients who show an allergic reaction to this test will be excluded from the
study);

5. Known non-responders to risperidone or paliperidone;

6. Patients who pose a significant risk of a suicide attempt based on history or the
Investigator's judgment; answer "yes" to Suicidal Ideation items 4 or 5 on the
Columbia Suicide Severity Rating Scale (C-SSRS) for current or past 30 days on the
"Baseline/Screening version" at screening; have had suicidal behavior in the last 12
months as measured by the C-SSRS at screening; or are at imminent risk of suicide or
violent behavior based on the Investigator's clinical assessment or the C-SSRS
assessment of lifetime suicidal ideation or behavior at screening;

7. Any one or more of the following 3 conditions: (i) clinically significant liver
dysfunction, (ii) hepatitis B surface antigen (HBsAg) positive, or (iii) a serum
alanine transaminase (ALT) or aspartate transaminase (AST) > 2x upper limit of normal
(ULN) range (if the ALT or AST levels are between 2x and 3x ULN in the first screening
test and the elevation may be caused by non-specific reasons in the judgment of the
Investigator, a second test can be performed after one week. If the repeated ALT or
AST levels are still >2x ULN, the patient must not be included in the study). However,
patients who are hepatitis C positive may be enrolled, if this condition is considered
stable without treatment and liver function is normal;

8. History of symptomatic orthostatic hypotension with a decrease of ≥20 mmHg in systolic
blood pressure (SBP) or decrease of ≥10 mmHg in diastolic blood pressure (DBP) when
changing from supine to standing position after having been in the supine position for
at least 5 minutes or SBP less than 105 mmHg in a supine position at screening;

9. Uncontrolled diabetes or hemoglobin A1c (HbAlc) level ≥7%, or newly diagnosed within
the past 12 months prior to screening;

10. History of neuroleptic malignant syndrome (NMS) or tardive dyskinesia; history of
severe akathisia or extra-pyramidal reactions such as dystonia with previous use of
risperidone or other neuroleptic treatments; score ≥ 3 on the Global Clinical
Assessment of the BARS; or score ≥ 1 on the AIMS at screening. Patients who experience
mild extrapyramidal symptoms attributable to study medications will be allowed to
continue with appropriate anticholinergic treatment (benztropine, diphenhydramine,
and/or trihexyphenidyl);

11. Electroconvulsive therapy within 60 days before screening;

12. Use of a long-acting injectable for the treatment of schizophrenia within 4 weeks (8
weeks for Risperdal Consta®) before screening;

13. Use of injectable paliperidone palmitate within 10 months before screening;

14. Use of clozapine within 4 weeks before screening;

15. Use of nonselective or irreversible monoamine oxidase inhibitor (MAOI) antidepressants
within 30 days before screening;

16. Use of other antidepressants unless the patient has been on a stable dose for at least
30 days before screening;

17. Use of strong inducers of either CYP 3A4 or P-glycoprotein (P-gp) within 2 weeks or 5
half-lives, whichever is longer, before screening;

18. QTcF interval greater than 450 msec for males and 470 msec for females or a prior
history or presence of circumstances that could increase the risk of torsade de
pointes or sudden death in association with the use of drugs that prolong the QTc
interval, or other clinically significant ECG findings in the opinion of the
Investigator;

19. Clinically significant past medical history (within 2 years) of gastrointestinal,
cardiovascular, musculoskeletal, endocrine, hematologic, renal, hepatic,
bronchopulmonary, neurologic, immunologic disorders, or drug hypersensitivity which,
in the judgement of the Investigator, would interfere with the patient's ability to
participate in the study;

20. Malignancies with the exception of basal cell or squamous cell skin cancer or in situ
cervical cancer within 5 years prior to screening;

21. History or current diagnosis of epilepsy or convulsive disorder other than a single
childhood febrile seizure;

22. Participation in a previous clinical study of paliperidone or any other related
medications within the past 3 months prior to screening;

23. Receipt of another investigational product within 1 month, or 5 half-lives of the
other investigational product, whichever is longer, prior to screening;

24. Donation or blood collection of > 1 unit (approximate 450 mL) of blood (or blood
products) or acute loss of blood during the 90 days prior to screening;

25. Any clinical observation or clinical laboratory abnormality including human
immunodeficiency virus (HIV) positive test result or abnormal ECG findings at
screening or baseline visits which, in the opinion of the Investigator, may endanger
the patient or interfere with the endpoints of the study. If the results of clinical
laboratory or ECG testing are outside normal reference ranges, the patient may be
enrolled but only if these findings are determined not to be clinically significant by
the Investigator. This determination must be recorded in the patient's source
documents.