Assessing Physical Function in Sickle Cell Patients Taking Voxelotor

NCT ID: NCT06023199

Last Updated: 2026-02-02

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE2

Total Enrollment

6 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-10-23

Study Completion Date

2026-06-15

Brief Summary

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Voxelotor is a novel hemoglobin polymerization inhibitor which has been demonstrated to reduce hemolysis and improve hemoglobin levels. There have been numerous studies examining the clinical impact of voxelotor in sickle cell disease (SCD) patients, but there are few published reports on the effects of treatment on physical function in patients with SCD. The hypothesis to be tested is that anemic SCD patients will have improvements in performance after 6 months of voxelotor treatment.

Detailed Description

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Conditions

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Sickle Cell Disease

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Voxeletor

Group Type EXPERIMENTAL

Voxelotor

Intervention Type DRUG

Voxelotor is administered orally at a dose of 1500mg daily.

Interventions

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Voxelotor

Voxelotor is administered orally at a dose of 1500mg daily.

Intervention Type DRUG

Other Intervention Names

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Oxbryta

Eligibility Criteria

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Inclusion Criteria

1. Provision of signed and dated informed consent form
2. Stated willingness to comply with all study procedures and availability for the duration of the study
3. Male or female,
4. aged 18-65 years
5. Diagnosis of sickle cell disease with HbSS, HbSc, HbS-beta thalassemia genotypes
6. Hemoglobin level of 6 g/dL - 10.5 g/dL
7. Between 0 and 10 vaso-occlusive (VOC) episodes in previous 12 months
8. Ability to take oral medication and be willing to adhere to the voxelotor regimen
9. For females of reproductive potential, they will be educated to avoid pregnancy during study period and for one month after due to limited data surrounding pregnancy and voxelotor
10. For males of reproductive potential: use of condoms or other methods to ensure effective contraception with partner
11. Agreement to adhere to Lifestyle Considerations (see section 5.3) throughout study duration

Exclusion Criteria

1. Hemoglobin results \< 6 g/dL or \> 10.5 g/dL
2. Patients receiving hydroxyurea who have had a dose change within the prior 3 months
3. Females who are breastfeeding or pregnant
4. Patients who are receiving regularly scheduled blood (RBC) transfusion therapy (also termed chronic, prophylactic, or preventive transfusion) within 30 days of 6MWT
5. Any form of hepatic dysfunction as demonstrated by alanine aminotransferase (ALT) \>4 × ULN or Child-Pugh Class C
6. Acute kidney injury or chronic renal disease with estimated glomerular filtration rate\<30mL/min/1.73 m2
7. Current or previous diagnosis of malignancy within the last two years excluding local therapy for non-melanoma skin malignancy
8. Unstable cardiopulmonary disease within the last 6 months prior to study enrollment
9. Any conditions including behavioral or medical that in the opinion of the investigator, may negatively impact informed consent, participation and study interpretation
10. Current use of commercially available voxelotor
11. Prior hypersensitivity to voxelotor or its excipients
12. Patients with baseline gait and other physical impairments that would limit 6MWT and other functional assessment at discretion of the investigator
13. Patients who on day of assessment present with vaso-occlusive crisis or rate their pain greater than 6 on a scale of 1-10 using the Numeric Rating Scale will not be assessed that day and re-screened at the investigator's discretion.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pfizer

INDUSTRY

Sponsor Role collaborator

Inova Health Care Services

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Sheinei Alan

Role: PRINCIPAL_INVESTIGATOR

Inova Schar Cancer Institute

Locations

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Inova Schar Cancer Institute

Falls Church, Virginia, United States

Site Status

Countries

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United States

References

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Eisenstaedt R, Penninx BW, Woodman RC. Anemia in the elderly: current understanding and emerging concepts. Blood Rev. 2006 Jul;20(4):213-26. doi: 10.1016/j.blre.2005.12.002. Epub 2006 Feb 10.

Reference Type BACKGROUND
PMID: 16472893 (View on PubMed)

Vichinsky E, Hoppe CC, Ataga KI, Ware RE, Nduba V, El-Beshlawy A, Hassab H, Achebe MM, Alkindi S, Brown RC, Diuguid DL, Telfer P, Tsitsikas DA, Elghandour A, Gordeuk VR, Kanter J, Abboud MR, Lehrer-Graiwer J, Tonda M, Intondi A, Tong B, Howard J; HOPE Trial Investigators. A Phase 3 Randomized Trial of Voxelotor in Sickle Cell Disease. N Engl J Med. 2019 Aug 8;381(6):509-519. doi: 10.1056/NEJMoa1903212. Epub 2019 Jun 14.

Reference Type BACKGROUND
PMID: 31199090 (View on PubMed)

Howard J, Ataga KI, Brown RC, Achebe M, Nduba V, El-Beshlawy A, Hassab H, Agodoa I, Tonda M, Gray S, Lehrer-Graiwer J, Vichinsky E. Voxelotor in adolescents and adults with sickle cell disease (HOPE): long-term follow-up results of an international, randomised, double-blind, placebo-controlled, phase 3 trial. Lancet Haematol. 2021 May;8(5):e323-e333. doi: 10.1016/S2352-3026(21)00059-4. Epub 2021 Apr 7.

Reference Type BACKGROUND
PMID: 33838113 (View on PubMed)

Howard J, Hemmaway CJ, Telfer P, Layton DM, Porter J, Awogbade M, Mant T, Gretler DD, Dufu K, Hutchaleelaha A, Patel M, Siu V, Dixon S, Landsman N, Tonda M, Lehrer-Graiwer J. A phase 1/2 ascending dose study and open-label extension study of voxelotor in patients with sickle cell disease. Blood. 2019 Apr 25;133(17):1865-1875. doi: 10.1182/blood-2018-08-868893. Epub 2019 Jan 17.

Reference Type BACKGROUND
PMID: 30655275 (View on PubMed)

Inusa BPD, Hsu LL, Kohli N, Patel A, Ominu-Evbota K, Anie KA, Atoyebi W. Sickle Cell Disease-Genetics, Pathophysiology, Clinical Presentation and Treatment. Int J Neonatal Screen. 2019 May 7;5(2):20. doi: 10.3390/ijns5020020. eCollection 2019 Jun.

Reference Type BACKGROUND
PMID: 33072979 (View on PubMed)

Grosse SD, Odame I, Atrash HK, Amendah DD, Piel FB, Williams TN. Sickle cell disease in Africa: a neglected cause of early childhood mortality. Am J Prev Med. 2011 Dec;41(6 Suppl 4):S398-405. doi: 10.1016/j.amepre.2011.09.013.

Reference Type BACKGROUND
PMID: 22099364 (View on PubMed)

Piel FB, Patil AP, Howes RE, Nyangiri OA, Gething PW, Dewi M, Temperley WH, Williams TN, Weatherall DJ, Hay SI. Global epidemiology of sickle haemoglobin in neonates: a contemporary geostatistical model-based map and population estimates. Lancet. 2013 Jan 12;381(9861):142-51. doi: 10.1016/S0140-6736(12)61229-X. Epub 2012 Oct 25.

Reference Type BACKGROUND
PMID: 23103089 (View on PubMed)

Anie KA, Green J. Psychological therapies for sickle cell disease and pain. Cochrane Database Syst Rev. 2002;(2):CD001916. doi: 10.1002/14651858.CD001916.

Reference Type BACKGROUND
PMID: 12076428 (View on PubMed)

Crawford J, Cella D, Cleeland CS, Cremieux PY, Demetri GD, Sarokhan BJ, Slavin MB, Glaspy JA. Relationship between changes in hemoglobin level and quality of life during chemotherapy in anemic cancer patients receiving epoetin alfa therapy. Cancer. 2002 Aug 15;95(4):888-95. doi: 10.1002/cncr.10763.

Reference Type BACKGROUND
PMID: 12209734 (View on PubMed)

Corona LP, Andrade FCD, da Silva Alexandre T, de Brito TRP, Nunes DP, de Oliveira Duarte YA. Higher hemoglobin levels are associated with better physical performance among older adults without anemia: a longitudinal analysis. BMC Geriatr. 2022 Mar 21;22(1):233. doi: 10.1186/s12877-022-02937-4.

Reference Type BACKGROUND
PMID: 35313814 (View on PubMed)

Yenamandra A, Marjoncu D. Voxelotor: A Hemoglobin S Polymerization Inhibitor for the Treatment of Sickle Cell Disease. J Adv Pract Oncol. 2020 Nov-Dec;11(8):873-877. doi: 10.6004/jadpro.2020.11.8.7. Epub 2020 Nov 1.

Reference Type BACKGROUND
PMID: 33489427 (View on PubMed)

Agarwala P, Salzman SH. Six-Minute Walk Test: Clinical Role, Technique, Coding, and Reimbursement. Chest. 2020 Mar;157(3):603-611. doi: 10.1016/j.chest.2019.10.014. Epub 2019 Nov 2.

Reference Type BACKGROUND
PMID: 31689414 (View on PubMed)

Other Identifiers

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U23-02-4988

Identifier Type: -

Identifier Source: org_study_id

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