Dose Escalation Pilot Study to Evaluate the Safety of Alocyte for the Treatment of Facetogenic Back Pain

Inclusion Criteria:

• In order to be eligible to participate in this study, all individuals must meet allof the following criteria:

1. Subjects age > 18 years at the time of signing the Informed Consent Form.

2. Male or Female.

3. Ability of participant to understand and the willingness to sign a writteninformed consent document.

4. Facetogenic back pain diagnosed using the following diagnostic criteriaSubjects who have chronic low back pain based on clinical evaluation. Painonset at dorsal extension and release at flexion is often considered suggestivefor facet pain, even if non-specific, such as maximal tenderness upon deeppalpation of posterior elements.

5. Patient with up to 5 diseased facet joints

6. Chronic Facetogenic pain (≥ 6 months) in patients that have failed conservativemanagement

7. Subjects must be reasonably able to return for multiple follow-up visits.

8. For Women of Child-Bearing Potential (WOCBP) only, willingness to useFDA-recommended birth control until 6 months post treatment.

9. Any male subject must agree to use contraceptives and not donate sperm duringthe study.

Exclusion Criteria:

1. Previous surgical intervention for back pain

2. Previous stem cell injection(s) within the last year

3. Use of anticoagulation or NSAIDs within 5 days of the injection

4. MRI finding of severe high-grade lumbar stenosis

5. Leg pain exceeding back pain

6. Pain worse with flexion maneuvers

7. Fracture of lumbar vertebrae

8. Inability to perform any of the assessments required for endpoint analysis.

9. Clinically significant abnormal screening laboratory or clinical assessment values

10. Use of medications during the early phase of treatment such as chronic narcotic use,systemic corticosteroid administration, local corticosteroid injection at facetsanticoagulant therapy and viscosupplementation into facets, any investigational drugused within 3 months prior to screening or during study and surgery in the facets

11. Subjects with serious co-morbidities are excluded.

12. Evidence of inflammatory arthritis (example, rheumatoid arthritis and ankylosingspondylitis) or traumatic fractures, osteoarthritis, meniscoid entrapment, synovialimpingement, joint subluxation, synovial inflammation, loss of cartilage, andmechanical injury.

13. Have a clinical history of malignancy within 5 years (i.e., subjects with priormalignancy must be disease free for 5 years), except curatively treated basal cellcarcinoma, squamous cell carcinoma, melanoma in situ or cervical carcinoma, ifrecurrence occurs.

14. Be currently participating (or participated within the previous 6 months) in aninvestigational therapeutic or device trial.

15. Exhibiting signs of moderate or severe chronic respiratory disease (such as COPD,asthma, or pulmonary fibrosis).

16. Patient with rheumatologic disorders.

17. History of chronic liver disease or patient showing signs of clinical jaundice atthe time of screening.

18. History of severe chronic kidney disease or requiring dialysis.

19. Patient with NYHA Class III or IV congestive heart failure or life-threateningarrhythmias.

20. Subjects with a history of bleeding disorders, anticoagulation therapy that cannotbe stopped as prior to the treatment.

21. Any unstable condition of clinical significance, e.g., uncontrolled hypertension,unstable angina pectoris, worsening asthma.

22. Hydroxychloroquine, oral or parenteral corticosteroids, immunosuppressants, orimmunomodulating agents within 21 days prior to the Day 0/treatment visit.

23. Be a female who is pregnant, nursing, or of childbearing potential while notpracticing effective contraceptive methods. Female subjects must undergo a bloodpregnancy test at screening which will be within 72 hours of the IP infusion.

24. Subject has a body mass index (BMI) greater than 42 kg/m2

25. Subject has or had an active infection requiring systemic antibiotics within 12weeks of enrollment in the study

26. Inability to perform any of the assessments required for endpoint analysis.

27. Active listing (or expected future listing) for transplant of any organ.

28. Be a solid organ transplant recipient. This does not include prior cell-basedtherapy (>12 months prior to enrollment), bone, skin, ligament, tendon or cornealgrafting. Have a history of organ or cell transplant rejection.

29. History of drug abuse (illegal "street" drugs except marijuana, if it is legal touse in states where patient resides), or prescription medications not being usedappropriately for a pre-existing medical condition or alcohol abuse (≥ 5 drinks/dayfor ˃ 3 months), or documented medical, occupational, or legal problems arising fromthe use of alcohol or drugs within the past 24 months

30. Patients with untreated HIV infection. However, patients can be enrolled if havebeen treated for HIV and the test negative for HIV viral load but still testpositive for antibodies.