Safety and Antiviral Activity of BLD-2660 in COVID-19 Hospitalized Subjects

Phase 2, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety and Antiviral Activity of BLD-2660 in Hospitalized Subjects With Recently Diagnosed COVID-19 Compared to Standard of Care Treatment

Status

Completed

Phases

Phase 2

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04334460

Enrollment

120

Registered

2020-04-06

Start date

2020-05-04

Completion date

2021-06-21

Last updated

2022-04-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sars-CoV-2, Covid19

Brief summary

BLD-2660 is a novel, synthetic, orally active, small molecule inhibitor of calpain (CAPN) 1, 2, and 9 that is selective over the cathepsins as well as other protease families, displays good metabolic stability and permeability, oral bioavailability and low cytochrome P450 (CYP) inhibition. It is under development for the treatment of coronavirus disease-19 (COVID-19) resulting from infection with Severe Acute Respiratory Syndrome Coronavirus 2 (SARSCoV2), where there is significant unmet medical need.

Detailed description

Interleukin 6 (IL-6), a proinflammatory cytokine, is a key driver of a cytokine storm that plays a significant role in clinical complications and acute lung injury. Emerging data indicate that serum levels of IL-6 are elevated in COVID-19 patients and are predictive of respiratory failure and mortality. IL-6 has been shown to contribute to lung damage during SARS-CoV infection and the virus itself is capable of directly inducing its expression. Suppression of pro-inflammatory IL-6 have been shown to have a therapeutic effect in many inflammatory diseases, including viral infections. In a mouse model of lung injury employing bleomycin, BLD-2660, at therapeutic doses of 30 and 100 mg/kg twice per day (BID), reduced IL-6 levels in bronchoalveolar lavage (BAL) fluid. BLD-2660 also attenuated fibrosis damage as measured by significant reductions in the alpha smooth muscle actin and collagen 1 in lung tissue. BLD-2660 also demonstrated target engagement by inhibiting cleavage of one of its substrates, spectrin, in bronchoalveolar cells. BLD-2660 was also evaluated in a mouse model of NASH fibrosis, demonstrating an anti-fibrotic effect. A significant decrease in IL-6 transcription was also observed. This suggests that the effect of BLD-2660 on IL-6 is independent of the injury, or the affected organ. It has been shown that the receptor for SARS-CoV-1 and -2 entry into the cell is angiotensin-converting enzyme 2 (ACE-2). ACE-2 and the dimeric calpains (data on file) are co-expressed in respiratory epithelial cells, the site of both viral entry and predominant early lung injury in COVID-19. Inhibition of dimeric calpain activity has not been associated with impairment of normal immune function. The safety and tolerability of BLD-2660 has been demonstrated in the recently completed Phase 1 single ascending dose (SAD)/multiple ascending dose (MAD) B-2660-101 study. As BLD-2660 has been demonstrated to (1) reduce tissue IL-6 levels and (2) attenuate lung fibrosis damage, it could therefore, potentially reduce the nonproductive IL-6 mediated host-response to infection, which contribute to morbidity and mortality in COVID-19. In addition, data suggest that survivors of SARS-CoV-2 infection are at risk for chronic impairment of pulmonary function, likely attributable to pulmonary fibrosis secondary to lung injury and inflammation. Although there is not yet available data documenting numbers of patients infected with SARS CoV2 pneumonia who progress to pulmonary fibrosis, epidemiology, viral immunology, and current clinical evidence support that pulmonary fibrosis may become one of the serious long-term complications of survivors of COVID-19 related pneumonia. Thus, BLD-2660 could not only potentially downregulate the nonproductive host-response to infection, which contributes to morbidity and mortality in COVID-19 but also could reduce potential long-term fibrosis and loss of pulmonary function resulting from SARS-CoV pneumonia. This study will evaluate BLD-2660 as an add-on therapy to standard of care (SOC) in hospitalized subjects with recent diagnosis of COVID-19.

Interventions

DRUGBLD-2660

BLD-2660 is a novel, synthetic, orally active, small molecule inhibitor of calpain (CAPN) 1, 2, and 9.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

At least 18 years of age at the time of signing the ICF. Hospitalized for COVID-19. Diagnosed with COVID-19 as defined by having at least 2 of the following signs or symptoms within the past 2 days: * Fever defined as a body temperature of ≥ 38.0 °C oral, or ≥ 38.3 °C rectal, ≥37.7 °C forehead or ≥38.7°C aural (axillary temperatures are not allowable); * Cough; * Fatigue; * Shortness of breath. Radiographic evidence (chest x-ray or CT scan) of one the following: * Ground-glass opacities, or * Local or bilateral patchy infiltrates, or * Interstitial pulmonary infiltrates. Oxygen requirements: * SpO2 ≤ 94% on ambient air OR * Requires supplemental oxygen administration by nasal cannula, simple face mask, or other similar oxygen delivery device. Male and/or female subjects. \- Contraception use by men or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. All subjects (male or female) who are of childbearing potential must agree to use highly effective contraception during the study. Female subjects and male partners of female subjects must continue to use highly effective contraception for 30 days after the last dose of study drug. Female subjects should not donate oocytes during this time. Male subjects and female partners of male subjects must continue to use highly effective contraception for 90 days. Male subjects must agree not to donate sperm during this time. Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject. Note: Ethinyl estradiol is the primary estrogen used in hormonal contraceptives. The progestin component consists of norethindrone, levonorgestrel, norgestrel, norethindrone acetate, ethynodiol diacetate, norgestimate, desogestrel, and drospirenone. As BLD-2660 is a weak CYP3A4 inducer, exposure to both the estrogen and progestin components in hormonal contraceptives may be decreased, resulting in an increased risk of pregnancy. As such, it is recommended that subjects who are on hormonal contraceptives for birth control should use an alternate means of contraception (condoms, diaphragms, intrauterine device (IUD), other barrier methods, sexual abstinence, etc.) during participation in the study. Women of childbearing potential must have a negative serum pregnancy test at Screening within 72 hours prior to first administration of study drug. Women not of childbearing potential must be postmenopausal (defined as cessation of regular menstrual periods for at least 1 year Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the ICF and in this protocol

Exclusion criteria

Active bacterial pneumonia infection Known active tuberculosis (TB). History of Child-Pugh B or C cirrhosis. History of ischemic heart disease or myocardial infarction or acute coronary syndrome. Subjects requiring supplemental oxygen ≥0.75 FiO2. It is not in the best interest of the subjects to participate, in the opinion of the treating Investigator. Female subjects who are pregnant or breastfeeding or expecting to conceive within the projected duration of the study, starting with the screening visit through 90 days after the last dose of study drug. The following laboratory parameters are excluded: * Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>5 x upper limit of normal (ULN); * Creatinine clearance \< 50 mL/min. Requiring, or expected to require mechanical ventilation at screening. Treatment with chloroquine or hydroxychloroquine at study entry. Treatment with anti-IL 6, anti-IL-6 receptor antagonists, or with Janus kinase inhibitors (JAKi) in the past 30 days or plans to receive during the study period. Participation in any other clinical study of an experimental drug treatment for COVID-19 within 6 half-lives of the experimental treatment. Note: Subjects participating in an observational study are an exception to this criterion and may qualify for the study with Sponsor approval. Note: Subjects who have entered the follow-up phase of an investigational study may participate as long as it has been 4 weeks after the last dose of the previous investigational agent. * Unable to swallow solid oral medication or known malabsorption disorder. * Subjects who have allergy to BLD-2660 or inactive components of BLD-2660.

Design outcomes

Primary

Measure	Time frame	Description
Time to Recovery	Course of study; 28 days	To evaluate time to recovery as defined by no longer requiring oxygen support or hospital discharge, whichever occurs first.
Change in Oxygenation	10 days	To evaluate change in oxygenation in hospitalized adults with COVID-19 treated with BLD-2660. Measured by change from baseline to Day 10 or hospital discharge, if sooner, in the ratio of peripheral hemoglobin oxygen saturation to fraction of inspired oxygen (SpO2/FiO2)

Secondary

Measure	Time frame	Description
Safety & Tolerability: Incidence of TEAEs and Serious Adverse Events (SAEs)	Course of study; 28 days	To evaluate the safety and tolerability of BLD-2660 in the same population. Measured by incidence of TEAEs and serious adverse events (SAEs)

Other

Measure	Time frame	Description
Duration of Remdesivir Use	Course of study; 28 days	Measured by duration (in days) of remdesivir use in subjects starting remdesivir within 24 hours of first dose of BLD-2660
Change in Clinical Status	Course of study; 28 days	Measured by change from baseline to Days 10, 14, 21 and 28 in clinical status outcome using a 6-point ordinal scale
Time to Discharge Readiness	Course of study; 28 days	Measured by time to discharge readiness
Change in IL-6	Course of study; 28 days	Measured by change from baseline to Days 10, 14, 21 and 28 in IL-6 in ng/mL measured by analytical assay
Change in D-dimer	Course of study; 28 days	Measured by change from baseline to Days 10, 14, 21 and 28 in D-dimer in ng/mL measured by analytical assay
Percentage of Subjects in Each Category of the 6-point Ordinal Scale	Course of study; 28 days	Measured by percentage of subjects reporting each 6-point ordinal scale of the clinical status outcome assessment.
Proportion of Subjects Discharged During Study	Course of study; 28 days	Measured by proportion of subjects ready to be discharged from the hospital during the 28-day study period following enrollment.
Time to Resolution of Fever	Course of study; 28 days	Measured by time to resolution of fever below entry criteria for 24 hours in subjects with fever at baseline

Countries

Brazil, United States

Participant flow

Participants by arm

Arm	Count
Active Group BLD-2660: BLD-2660 is a novel, synthetic, orally active, small molecule inhibitor of calpain (CAPN) 1, 2, and 9.	81
Placebo Group Placebo to Match (PTM) the active BLD-2660	39
Total	120

Withdrawals & dropouts

Period	Reason	FG000	FG001
Full Analysis Set (FAS)	Patients did not receive any study drug & are therefore excluded from the FAS.	4	1
Safety Analysis Population	Patients did not receive any study drug & are therefore excluded from the Safety analysis set.	4	1

Baseline characteristics

Characteristic	Active Group	Placebo Group	Total
6-Point Ordinal Scale 1 - Not hospitalized	0 Participants	0 Participants	0 Participants
6-Point Ordinal Scale 2 - Hospitalized, not requiring supplemental oxygen	6 Participants	1 Participants	7 Participants
6-Point Ordinal Scale 3 - Hospitalized, requiring supplemental oxygen	60 Participants	25 Participants	85 Participants
6-Point Ordinal Scale 4 - Hospitalized, on non-invasive ventilation or high flow oxygen device	6 Participants	7 Participants	13 Participants
6-Point Ordinal Scale 5 - Hospitalized, on invasive mechanical ventilation or ECMO	0 Participants	0 Participants	0 Participants
6-Point Ordinal Scale 6 - Death	0 Participants	0 Participants	0 Participants
6-Point Ordinal Scale 7 - Missing	5 Participants	5 Participants	10 Participants
Age, Continuous	51.3 Years STANDARD_DEVIATION 12.97	54.2 Years STANDARD_DEVIATION 13.95	52.2 Years STANDARD_DEVIATION 13.31
APACHE II Score	6.5 units on a scale STANDARD_DEVIATION 5.41	6.5 units on a scale STANDARD_DEVIATION 4.84	6.5 units on a scale STANDARD_DEVIATION 5.22
D-Dimer (ug/mL)	0.8 ug/mL STANDARD_DEVIATION 0.7	0.8 ug/mL STANDARD_DEVIATION 0.62	0.8 ug/mL STANDARD_DEVIATION 0.67
Ethnicity (NIH/OMB) Hispanic or Latino	45 Participants	19 Participants	64 Participants
Ethnicity (NIH/OMB) Not Hispanic or Latino	35 Participants	19 Participants	54 Participants
Ethnicity (NIH/OMB) Unknown or Not Reported	1 Participants	1 Participants	2 Participants
IL-6 (ng/mL)	12.9 ng/mL STANDARD_DEVIATION 27.6	11.3 ng/mL STANDARD_DEVIATION 13.1	12.4 ng/mL STANDARD_DEVIATION 23.71
Race (NIH/OMB) American Indian or Alaska Native	0 Participants	0 Participants	0 Participants
Race (NIH/OMB) Asian	0 Participants	1 Participants	1 Participants
Race (NIH/OMB) Black or African American	13 Participants	11 Participants	24 Participants
Race (NIH/OMB) More than one race	7 Participants	7 Participants	14 Participants
Race (NIH/OMB) Native Hawaiian or Other Pacific Islander	1 Participants	0 Participants	1 Participants
Race (NIH/OMB) Unknown or Not Reported	0 Participants	0 Participants	0 Participants
Race (NIH/OMB) White	60 Participants	20 Participants	80 Participants
Region of Enrollment Brazil	41 participants	20 participants	61 participants
Region of Enrollment United States	40 participants	19 participants	59 participants
SARS-Cov-2 PCR Viral Load (copies/mL)	5703533.3 copies/mL STANDARD_DEVIATION 30719776.01	553963.0 copies/mL STANDARD_DEVIATION 2177374.66	4036053.4 copies/mL STANDARD_DEVIATION 25348615.41
Sex: Female, Male Female	42 Participants	13 Participants	55 Participants
Sex: Female, Male Male	39 Participants	26 Participants	65 Participants
SpO2/FiO2 Ratio	299.2 Ratio STANDARD_DEVIATION 61.89	290.8 Ratio STANDARD_DEVIATION 72.34	296.3 Ratio STANDARD_DEVIATION 65.41

Adverse events

Event type	EG000 affected / at risk	EG001 affected / at risk
deaths Total, all-cause mortality	2 / 77	2 / 38
other Total, other adverse events	42 / 77	23 / 38
serious Total, serious adverse events	9 / 77	9 / 38

Outcome results

Primary

Change in Oxygenation

To evaluate change in oxygenation in hospitalized adults with COVID-19 treated with BLD-2660. Measured by change from baseline to Day 10 or hospital discharge, if sooner, in the ratio of peripheral hemoglobin oxygen saturation to fraction of inspired oxygen (SpO2/FiO2)

Time frame: 10 days

Population: FAS Set

Arm	Measure	Value (LEAST_SQUARES_MEAN)	Dispersion
Active Group	Change in Oxygenation	33.8 Ratio	Standard Error 17.1
Placebo Group	Change in Oxygenation	66.8 Ratio	Standard Error 25.58

Primary

Time to Recovery

To evaluate time to recovery as defined by no longer requiring oxygen support or hospital discharge, whichever occurs first.