NCT05469828

Brief Summary

Hypothesis Efficient unloading of oxygen to regions of high metabolic demand requires a healthy microvasculature to sense local oxygen tension and regulate flow, accordingly. In sickle cell disease patients, the investigators have demonstrated oxygen supply-demand mismatch, or SDM, in proportion to anemia severity. SDM occurs in both the peripheral circulation and the brain, and four characteristics: 1) Hyperemia beyond expected for the level of anemia, 2) Corresponding loss of vascular dilatory reserve, 3) Impaired oxygen unloading to the tissues, and 4) Tissue hypoxia. In sickle cell disease, red blood cell (RBC) and white blood cell (WBC) adhere to vascular endothelium triggering transient or irreversible microvascular damage as well as releasing vasoactive substances that contribute to microvascular dysregulation. The investigators postulate that ongoing microvascular damage/dysregulation in the setting of increased total blood flow contributes to SDM. The investigators believe SEG101, by lowering RBC and WBC adhesion to the microvasculature, will improve SDM and tissue oxygenation. Objectives

  • Primary - The investigators will test whether SEG101 improves SDM in patients with sickle cell anemia by measuring the change in tissue oxygenation measured by near infrared spectroscopy (NIRS).
  • Secondary/Exploratory - The investigators will identify end-organ disease and whether improvement of SDM by SEG101 occurs in patients with sickle cell anemia.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at P25-P50 for phase_1

Timeline
38mo left

Started Jul 2024

Longer than P75 for phase_1

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress37%
Jul 2024Jul 2029

First Submitted

Initial submission to the registry

August 31, 2021

Completed
11 months until next milestone

First Posted

Study publicly available on registry

July 22, 2022

Completed
1.9 years until next milestone

Study Start

First participant enrolled

July 1, 2024

Completed
4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2028

Expected
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2029

Last Updated

August 30, 2023

Status Verified

May 1, 2023

Enrollment Period

4 years

First QC Date

August 31, 2021

Last Update Submit

August 28, 2023

Conditions

Outcome Measures

Primary Outcomes (1)

  • The investigators will test whether SEG101 improves Supply-Demand Matching in patients with sickle cell anemia by measuring the change in tissue oxygenation by near infrared spectroscopy from baseline to 3 months and to 6 months.

    Tissue oxygenation is measured by near infrared spectroscopy in rSO2%. The investigators will account for changes in microcirculatory perfusion at rest and post-ischemia by laser doppler.

    Change measured over a 23 week period

Secondary Outcomes (3)

  • The investigators will test whether SEG101 improves Supply-Demand Matching in patients with sickle cell anemia by measuring the change in microcirculatory perfusion at rest and post-ischemia

    Change measured over a 23 week period

  • The investigators will test whether SEG101 improves Supply-Demand Matching in patients with sickle cell anemia by measuring the change in venous blood saturation and change in vessel endothelial function

    Change measured over a 23 week period

  • The investigators will test whether SEG101 improves Supply-Demand Matching in patients with sickle cell anemia in the pulmonary vasculature using tricuspid regurgitant jet velocity as an estimate of pulmonary artery pressure.

    Change measured over a 23 week period

Study Arms (2)

treatment

EXPERIMENTAL

The effects of Crizanlizumab will be assessed in 20 nontransfused SCD subjects. After comprehensive baseline assessment one month prior the time of study initiation, patients will be started on 5mg/kg of body weight to be initiated at week 1 with follow up dosing at week 3 and week 7 then q4weeks until week 23, which will be the last dose given (7 total doses). Safety laboratories will be drawn at each infusion visit. There will be a follow up phone call the day after receiving the medication. Comprehensive blood and vascular testing will be repeated at Week 11 and Week 23 of treatment.

Drug: Crizanlizumab

control

ACTIVE COMPARATOR

A total of 10 SCD subjects will be recruited from the hematology clinic at CHLA, generating a similar distribution of SS and SĂŸ0 hemoglobin. They will be studied twice, once at the beginning of the study, time 0, and once at the end of study, after 6 months. They will undergo the same cerebral, peripheral and cardiopulmonary testing procedures as the patients undergoing therapy. They will also have monthly phone calls to determine clinical outcomes such as crisis frequency, medication use, hospitalizations and other pertinent clinical findings that may arise.

Other: control

Interventions

patients will be started on 5mg/kg of body weight to be initiated at week 1 with follow up dosing at week 3 and week 7 then q4weeks until week 23, which will be the last dose given (7 total doses).

treatment
controlOTHER

Standard of care

control

Eligibility Criteria

Age16 Years+
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • We will enroll only SS and SĂŸ0 sickle cell disease patients
  • Both male and female will be included.
  • Our population of sickle cell disease is 90% African American and 10% Hispanic, therefore, our study population will reflect that distribution of ethnicity.
  • Informed consent from legal guardian and/or patient
  • Able to participate without needing sedation for MRI scan
  • Age at least 16 years

You may not qualify if:

  • Any pain crisis requiring an ER visit and/or admission to the hospital and/or required parenteral pain medication in the previous 4 weeks.
  • Any acute transfusion in the previous 4 weeks
  • Need for chronic transfusion therapy
  • Any known chronic illness that in the judgment of the investigator may compromise subject safety or data integrity. These include but are not limited to rheumatologic disorders, malignancy, severe asthma, chronic hepatic or renal insufficiency.
  • Known pregnancy
  • Seizure disorder
  • Inability to cooperate with MRI examinations
  • Contraindication to Crizanlizumab

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (22)

  • ITANO HA, PAULING L. A rapid diagnostic test for sickle cell anemia. Blood. 1949 Jan;4(1):66-8. No abstract available.

    PMID: 18103217BACKGROUND
  • PAULING L, ITANO HA, et al. Sickle cell anemia a molecular disease. Science. 1949 Nov 25;110(2865):543-8. doi: 10.1126/science.110.2865.543. No abstract available.

    PMID: 15395398BACKGROUND
  • Chien S, Usami S, Bertles JF. Abnormal rheology of oxygenated blood in sickle cell anemia. J Clin Invest. 1970 Apr;49(4):623-34. doi: 10.1172/JCI106273.

    PMID: 5443167BACKGROUND
  • Platt OS, Brambilla DJ, Rosse WF, Milner PF, Castro O, Steinberg MH, Klug PP. Mortality in sickle cell disease. Life expectancy and risk factors for early death. N Engl J Med. 1994 Jun 9;330(23):1639-44. doi: 10.1056/NEJM199406093302303.

    PMID: 7993409BACKGROUND
  • Steiner CA, Miller JL. Sickle Cell Disease Patients in U.S. Hospitals, 2004. 2006 Dec. In: Healthcare Cost and Utilization Project (HCUP) Statistical Briefs [Internet]. Rockville (MD): Agency for Healthcare Research and Quality (US); 2006 Feb-. Statistical Brief #21. Available from http://www.ncbi.nlm.nih.gov/books/NBK63489/

    PMID: 21938835BACKGROUND
  • Niss O, Fleck R, Makue F, Alsaied T, Desai P, Towbin JA, Malik P, Taylor MD, Quinn CT. Association between diffuse myocardial fibrosis and diastolic dysfunction in sickle cell anemia. Blood. 2017 Jul 13;130(2):205-213. doi: 10.1182/blood-2017-02-767624. Epub 2017 May 15.

    PMID: 28507082BACKGROUND
  • Kato GJ, Gladwin MT, Steinberg MH. Deconstructing sickle cell disease: reappraisal of the role of hemolysis in the development of clinical subphenotypes. Blood Rev. 2007 Jan;21(1):37-47. doi: 10.1016/j.blre.2006.07.001. Epub 2006 Nov 7.

    PMID: 17084951BACKGROUND
  • Detterich JA, Kato RM, Rabai M, Meiselman HJ, Coates TD, Wood JC. Chronic transfusion therapy improves but does not normalize systemic and pulmonary vasculopathy in sickle cell disease. Blood. 2015 Aug 6;126(6):703-10. doi: 10.1182/blood-2014-12-614370. Epub 2015 Jun 2.

    PMID: 26036801BACKGROUND
  • Friedman D, Szmuszkovicz J, Rabai M, Detterich JA, Menteer J, Wood JC. Systemic endothelial dysfunction in children with idiopathic pulmonary arterial hypertension correlates with disease severity. J Heart Lung Transplant. 2012 Jun;31(6):642-7. doi: 10.1016/j.healun.2012.02.020. Epub 2012 Mar 21.

    PMID: 22440720BACKGROUND
  • Kato GJ, Hebbel RP, Steinberg MH, Gladwin MT. Vasculopathy in sickle cell disease: Biology, pathophysiology, genetics, translational medicine, and new research directions. Am J Hematol. 2009 Sep;84(9):618-25. doi: 10.1002/ajh.21475.

    PMID: 19610078BACKGROUND
  • Delpy DT, Cope MC, Cady EB, Wyatt JS, Hamilton PA, Hope PL, Wray S, Reynolds EO. Cerebral monitoring in newborn infants by magnetic resonance and near infrared spectroscopy. Scand J Clin Lab Invest Suppl. 1987;188:9-17.

    PMID: 2835812BACKGROUND
  • Tenland T, Salerud EG, Nilsson GE, Oberg PA. Spatial and temporal variations in human skin blood flow. Int J Microcirc Clin Exp. 1983;2(2):81-90.

    PMID: 6236158BACKGROUND
  • Thorniley MS, Houston R, Wickramasinghe YA, Rolfe P. Application of near-infrared spectroscopy for the assessment of the oxygenation level of myoglobin and haemoglobin in cardiac muscle in vivo. Biochem Soc Trans. 1990 Dec;18(6):1195-6. doi: 10.1042/bst0181195. No abstract available.

    PMID: 2088860BACKGROUND
  • Nilsson GE, Tenland T, Oberg PA. Evaluation of a laser Doppler flowmeter for measurement of tissue blood flow. IEEE Trans Biomed Eng. 1980 Oct;27(10):597-604. doi: 10.1109/TBME.1980.326582. No abstract available.

    PMID: 6449469BACKGROUND
  • Lee JH, Jang YE, Song IK, Kim EH, Kim HS, Kim JT. Near-Infrared Spectroscopy and Vascular Occlusion Test for Predicting Clinical Outcome in Pediatric Cardiac Patients: A Prospective Observational Study. Pediatr Crit Care Med. 2018 Jan;19(1):32-39. doi: 10.1097/PCC.0000000000001386.

    PMID: 29140967BACKGROUND
  • De Blasi RA, Cope M, Ferrari M. Oxygen consumption of human skeletal muscle by near infrared spectroscopy during tourniquet-induced ischemia in maximal voluntary contraction. Adv Exp Med Biol. 1992;317:771-7. doi: 10.1007/978-1-4615-3428-0_94. No abstract available.

    PMID: 1288203BACKGROUND
  • Adams RJ, McKie VC, Brambilla D, Carl E, Gallagher D, Nichols FT, Roach S, Abboud M, Berman B, Driscoll C, Files B, Hsu L, Hurlet A, Miller S, Olivieri N, Pegelow C, Scher C, Vichinsky E, Wang W, Woods G, Kutlar A, Wright E, Hagner S, Tighe F, Waclawiw MA, et al. Stroke prevention trial in sickle cell anemia. Control Clin Trials. 1998 Feb;19(1):110-29. doi: 10.1016/s0197-2456(97)00099-8.

    PMID: 9492971BACKGROUND
  • Adams RJ, McKie VC, Hsu L, Files B, Vichinsky E, Pegelow C, Abboud M, Gallagher D, Kutlar A, Nichols FT, Bonds DR, Brambilla D. Prevention of a first stroke by transfusions in children with sickle cell anemia and abnormal results on transcranial Doppler ultrasonography. N Engl J Med. 1998 Jul 2;339(1):5-11. doi: 10.1056/NEJM199807023390102.

    PMID: 9647873BACKGROUND
  • Nathan DG. Regulation of fetal hemoglobin synthesis by cell cycle specific drugs. Prog Clin Biol Res. 1985;191:475-500. No abstract available.

    PMID: 2413483BACKGROUND
  • Gordeuk VR, Castro OL, Machado RF. Pathophysiology and treatment of pulmonary hypertension in sickle cell disease. Blood. 2016 Feb 18;127(7):820-8. doi: 10.1182/blood-2015-08-618561. Epub 2016 Jan 12.

    PMID: 26758918BACKGROUND
  • Presley TD, Perlegas AS, Bain LE, Ballas SK, Nichols JS, Sabio H, Gladwin MT, Kato GJ, Kim-Shapiro DB. Effects of a single sickling event on the mechanical fragility of sickle cell trait erythrocytes. Hemoglobin. 2010;34(1):24-36. doi: 10.3109/03630260903546999.

    PMID: 20113285BACKGROUND
  • Reiter CD, Wang X, Tanus-Santos JE, Hogg N, Cannon RO 3rd, Schechter AN, Gladwin MT. Cell-free hemoglobin limits nitric oxide bioavailability in sickle-cell disease. Nat Med. 2002 Dec;8(12):1383-9. doi: 10.1038/nm1202-799. Epub 2002 Nov 11.

    PMID: 12426562BACKGROUND

MeSH Terms

Conditions

Anemia, Sickle Cell

Interventions

crizanlizumab

Condition Hierarchy (Ancestors)

Anemia, Hemolytic, CongenitalAnemia, HemolyticAnemiaHematologic DiseasesHemic and Lymphatic DiseasesHemoglobinopathiesGenetic Diseases, InbornCongenital, Hereditary, and Neonatal Diseases and Abnormalities

Study Officials

  • Jon Detterich

    Children's Hospital Los Angeles

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Obdulio Carreras

CONTACT

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Treatment and Control
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 31, 2021

First Posted

July 22, 2022

Study Start

July 1, 2024

Primary Completion (Estimated)

July 1, 2028

Study Completion (Estimated)

July 1, 2029

Last Updated

August 30, 2023

Record last verified: 2023-05