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Article

A Feasibility Open-Labeled Clinical Trial Using a Second-Generation Artificial-Intelligence-Based Therapeutic Regimen in Patients with Gaucher Disease Treated with Enzyme Replacement Therapy

by
Noa Hurvitz
1,
Tama Dinur
2,
Shoshana Revel-Vilk
2,3,
Samuel Agus
4,
Marc Berg
4,5,
Ari Zimran
2,3,† and
Yaron Ilan
1,3,*,†
1
Departments of Medicine and Neurology, Hadassah Medical Center, Jerusalem 9112001, Israel
2
Gaucher Unit, The Eisenberg R&D Authority, Shaare Zedek Medical Center, Jerusalem 9103102, Israel
3
Faculty of Medicine, Hebrew University, Jerusalem 9112001, Israel
4
Oberon Sciences and Area 9 Innovation, Chestnut Hill, MA 02467, USA
5
Stanford University, Palo Alto, CA 94305, USA
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
J. Clin. Med. 2024, 13(11), 3325; https://doi.org/10.3390/jcm13113325
Submission received: 11 May 2024 / Revised: 25 May 2024 / Accepted: 26 May 2024 / Published: 5 June 2024
(This article belongs to the Section Clinical Pediatrics)
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Abstract

:
Background/Objectives: Gaucher Disease type 1 (GD1) is a recessively inherited lysosomal storage disorder caused by a deficiency in the enzyme β-glucocerebrosidase. Enzyme replacement therapy (ERT) has become the standard of care for patients with GD. However, over 10% of patients experience an incomplete response or partial loss of response to ERT, necessitating the exploration of alternative approaches to enhance treatment outcomes. The present feasibility study aimed to determine the feasibility of using a second-generation artificial intelligence (AI) system that introduces variability into dosing regimens for ERT to improve the response to treatment and potentially overcome the partial loss of response to the enzyme. Methods: This was an open-label, prospective, single-center proof-of-concept study. Five patients with GD1 who received ERT were enrolled. The study used the Altus Care™ cellular-phone-based application, which incorporated an algorithm-based approach to offer random dosing regimens within a pre-defined range set by the physician. The app enabled personalized therapeutic regimens with variations in dosages and administration times. Results: The second-generation AI-based personalized regimen was associated with stable responses to ERT in patients with GD1. The SF-36 quality of life scores improved in one patient, and the sense of change in health improved in two; platelet levels increased in two patients, and hemoglobin remained stable. The system demonstrated a high engagement rate among patients and caregivers, showing compliance with the treatment regimen. Conclusions: This feasibility study highlights the potential of using variability-based regimens to enhance ERT effectiveness in GD and calls for further and longer trials to validate these findings.

1. Introduction

Gaucher Disease type 1 (GD1) is a lysosomal storage disorder that affects many systems. It is an autosomal recessive disease caused by bi-allelic mutations in the glucocerebrosidase gene (GBA1), leading to deficiency in the enzymatic activity of the β-glucocerebrosidase and, therefore, to the lysosomal accumulation of its substrate glucosylceramide; this occurs most prominently in macrophages in the visceral tissues liver, spleen, and bone marrow, inducing a pleiotropic array of signs and symptoms, including hepatosplenomegaly, pancytopenia, and bone complications (such as bone crises, avascular necrosis, osteoporosis, and pathologic fractures) [1,2]. Glucosylsphingosine (Lyso-Gb1) is a highly sensitive and specific biomarker for diagnosing and monitoring patients with GD [3,4,5,6].
Since 1991, intravenous enzyme replacement therapy (ERT) has become the standard of care, improving almost all GD-related features, improving anemia and thrombocytopenia, reducing organomegaly (liver and spleen), and alleviating skeletal findings [5,6,7]. Therapy goals include hematological, visceral, and bone manifestations and improvement in quality of life, fatigue, and social participation [8].
Circadian rhythms and biological signaling occur in a complex network with cyclical 24 h period interactions (chronobiology) between the central and autonomic nervous systems, the endocrine glands, and the immune system. Among the factors influencing host response, those associated with circadian disruptions are emerging. Harnessing host rhythms or disrupting the immune rhythms could be exploited for clinical benefit [9]. The orchestrated molecular oscillations control the rhythmicity of numerous body events and determine the physiology of multiple metabolic and inflammatory pathways, which may be associated with the pathogenesis of GD [10,11].
Inherent intra- and inter-patient variability patterns are described in many biological systems [12,13,14,15,16,17,18,19,20,21,22,23,24,25]. Examples are variability at the DNA level, heart rate variability, and respiratory and gate variability [26,27,28,29,30]. The loss or change in physiologic variability is associated with poor prognosis [31,32,33]. The response to many drugs describes high degrees of intra- and inter-patient variability. The significant intra- and inter-patient variabilities in drug pharmacodynamics are associated with patients losing their response to drugs [34,35,36,37,38]. A constant daily dose, or a continuous increase in a dose, is more likely to be associated with drug tolerance or resistance, thus losing the clinical impact, compared with the irregular taking of the same dose or altering the daily dose [39]. Treatment regimens based on aperiodic routines of taking the medication at irregular intervals and irregular strengths were suggested to improve effects [39,40,41,42,43,44].
The constrained disorder principle (CDP) defines every biological system based on its inherent variability, bounded by dynamic boundaries [45]. This principle provides a method for platforms designed to improve response to chronic medications. CDP-based second-generation artificial intelligence systems (AI) were developed to introduce variability into treatment regimens, enhance the response to chronic medication, and address the partial or complete loss of drug efficacy [39,42,43,44]. These systems also assist in early diagnosing and monitoring patients with rare diseases [46].
The present study aimed to determine the feasibility of using an app that alters the regularity of the intervals between ERT dosages while keeping them within a range defined by the physician.

2. Methods

Study Design: The clinical trial was an open-label, prospective, single-center proof-of-concept study lasting 6 months. It aimed to assess the feasibility of using an algorithm-based regimen to improve the response to ERT in patients with GD. The trial enrolled subjects at the Gaucher Unit of the Shaare Zedek Medical Center in Jerusalem, Israel. The Shaare Zedek IRB committee approved the trial. The trial was registered at the NIH GOV No NCT06050967.
Study Population: Eligible subjects included males and females aged 18–75 diagnosed with GD1 and receiving at-home intravenous ERT every two weeks for six months at a regular dose of 30–60 U/kg per month.
Inclusion and exclusion criteria: Adult non-pregnant patients diagnosed with GD1who have been treated with ERT for at least 3 years, with no change in dosage in the last six months, were included in the study. Patients with severe infectious or malignant, autoimmune, or other disabling systemic diseases were excluded. Additionally, patients who could not provide written informed consent, had no smartphone, or did not adhere to the visit schedule and protocol were excluded.
Second-generation AI system: Altus Care™ is a mobile phone-based application and a product of Area9 Innovation Apps, a part of Area9 Group. It allows for the easy digitization of treatment plans or research protocols and their remote implementation. The present study utilized an algorithmic approach providing random drug dosing regimens (Oberon Sciences, Israel). The platform has been combined with treatment algorithms that use second-generation AI to provide random alterations in the dosing and times of administration of medications within a pre-defined range. It also serves as a reminder for patients to take their medications. The app provides a personalized therapeutic regimen, creating variability in dosages and administration times within physicians’ pre-defined ranges.
Study Design: Five participants who met the specified criteria were included in the study. All participants underwent a clinical examination during screening to ensure they met the requirements. Baseline clinical and laboratory parameters obtained at the screening included a physical exam, complete blood count (CBC), Lyso-GB1, and a 36-item short-form survey (SF-36) for quality-of-life assessment. After providing informed consent, the Altus Care™ application was installed on patients’ mobile phones.
In collaboration with the patients’ treating physicians and the home-treating nurse, an individualized treatment plan was developed for each patient within a pre-defined range of minimum and maximum weeks of ERT dosages and timing frames for its administration. According to the protocol, the patients’ monthly doses were not changed, but each dose and the timing of administration were changed randomly using the app.
As part of the study, each patient was randomly assigned a dosage between 400 units and their maximum monthly dosage. The administration time was also randomized, varying between 10 and 18 days instead of the standard 14-day interval. On the day of medication administration, patients were randomly assigned to a specific time within a few-hour window, from 7 a.m. to 2 p.m.
Follow-up parameters: During the follow-up period, the research coordinator conducted weekly check-ins with the patients over the phone to inquire about their clinical well-being and adherence to the treatment plan. Additionally, a physical examination, CBC, and Lyso-GB1 assessment were performed approximately every two months (twice during the study and once at the end of the follow-up) to evaluate the response to therapy. The patients completed SF-36 questionnaires at the beginning and end of the follow-up. The SF-36 is a 36-item patient-reported questionnaire that covers eight health domains: physical functioning (10 items), bodily pain (2 items), role limitations due to physical health problems (4 items), role limitations due to personal or emotional problems (4 items), emotional well-being (5 items), social functioning (2 items), energy/fatigue (4 items), and general health perceptions (5 items). Scores for each domain range from 0 to 100. A higher score indicates a more favorable health state.
Statistics: The Wilcoxon signed-rank test was used to analyze paired, continuous, and non-parametric data.

3. Results

3.1. Subjects’ Demographics and Safety Measures

Table 1 presents the demographics of the patients enrolled in the study. Five patients were enrolled, three males and two females, with a median age of 57.4 years. All patients completed the 6-month follow-up period and experienced no significant adverse events (AEs). Table 2 provides an example of drug administration based on the randomization algorithm.

3.2. Introducing Variability in Dosing and Administration Times Was Associated with Stable Clinical Outcomes of Patients with GD

The second-generation, AI-based regimen was associated with a stable response to ERT. The total SF-36 score improved in one patient with a 3% increase, did not change in three patients, and decreased by 4% in one patient. The feeling of a health change section increased in two patients (Figure 1A). One patient did not fill the SF-36 score due to his Parkinson’s disease and technical difficulty.
The hemoglobin level was stable in four patients and increased by 0.7 in one patient (Figure 1B). The median hemoglobin level was 13.7 g/dL before and 13.2 g/dL after the study intervention (p = NS). Platelet level increased in two patients, decreased in two patients, and was stable in one. The median platelet level was 170 × 109/L before and 165 × 109/L after the study intervention (p = 0.81) (Figure 1C).
Compared to the pre-intervention Lyso-GB1, the intervention was associated with a decrease in two patients (mean reduction: 25 ng/mL), an increase in one (34 ng/mL), and a stable level in two. The median Lyso-GB1 level was 159 ng/mL before and 164 ng/mL after the study intervention (p = NS) (Figure 1D).

4. Discussion

The results of this open-label proof-of-concept feasibility clinical trial suggest that using a second-generation personalized AI algorithm to randomize ERT regimens is both feasible and safe. Two patients experienced an increase in their platelet levels, two had a decrease in their Lyso-Gb1 levels, and two reported an improvement in their overall health. Unlike first-generation AI systems, the outcome-based second-generation system showed a high engagement rate among patients and physicians. Patients, treating physicians, and home ERT nurses all used the app and followed the treatment regimen as instructed.
The constrained disorder principle (CDP) defines every biological system based on its inherent variability, bounded by dynamic boundaries [45]. According to the CDP, systems adapt to their noisy environments by adjusting their level of intrinsic variability. The CDP sees system malfunctions as resulting from either too little or too much variability. It offers a method for addressing complex system malfunctions by modifying the levels of variability.
Based on this principle, disease or loss of response to medication reflects a reduced degree of variability or an increased variability beyond borders [41,45,47,48]. CDP-based second-generation AI systems are designed to implement variability signatures to improve response to chronic therapies or overcome the loss of response to chronic drugs. This platform can improve the response to therapeutic regimens in chronic diseases by introducing variability in administration times and dosages within approved ranges [46,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67].
Over 10% of patients with GD demonstrate an incomplete response to ERT or develop partial loss of response with time, a significant health problem for the patients and their caregivers [2,68,69,70,71,72]. Several mechanisms contribute to the loss of response to ERT. In some patients, the immune system may recognize the synthetic enzyme used in ERT as a foreign substance, producing neutralizing antibodies [73,74]. These antibodies can render the enzyme less effective or ineffective, reducing the therapeutic benefit. GD is a progressive disorder, and despite ERT, the accumulation of glucocerebroside can worsen over time. As the disease advances, the symptoms may become more severe, leading to the perception of a loss of response to therapy. The effectiveness of ERT is impacted by patient compliance with the treatment regimen. Missing doses or a lack of adherence to the recommended schedule can lead to suboptimal results. Other medical conditions or medications a patient takes can interfere with ERT’s effectiveness. When a loss of response to ERT is observed, physicians may need to explore alternative treatment options, such as switching to a different ERT or considering other therapeutic approaches like substrate reduction therapy or chaperone therapy [75]. In addition, the continuously dynamic inter- and intra-patient variability in response to ERT is a significant intervention challenge.
CDP-based second-generation AI system provides a tool that can dynamically and constantly tailor the regimen to biological variability in a personalized way [42]. Using biological noise and chronobiology-based algorithms is designed to overcome tolerance and partial or complete loss of response to chronic therapies in patients suffering from chronic diseases. The use of this platform was shown to have a beneficial clinical effect on multiple chronic diseases, including chronic heart failure, chronic pain, and multiple sclerosis. In patients with heart failure who developed diuretic resistance, using a CDP-based second-generation AI app that introduced variability into treatment regimens improved patients’ clinical and laboratory parameters. Using the system reduced hospitalization and emergency room admissions, showing a high rate of engagement with the system by patients and caregivers [76]. Similar beneficial data were demonstrated in patients with chronic pain and multiple sclerosis [48].
In the present study, the first level of the algorithm, an open-loop system, was used. It involves randomizing dose and administration times within a pre-defined approved range without AI. The clinical outcome did not affect the randomization.
The second level of the algorithm tailors variability to outcomes based on clinical and laboratory data collected from the subject. The third level involves quantifying signatures of variability in a personalized way, such as heart rate variability, alterations in cytokine secretion, and other disease biomarkers, and implementing them into the treatment algorithms [39,41,42,43,44].
The limitations of our study are the small sample size and the relatively short duration of intervention that may not have been sufficient to observe significant changes in response to ERT, the lack of diversity in this limited patient population, a lack of a control group, the open-labeled design, and the conduction in a single-center; there were non-significant changes in hemoglobin levels and platelet counts in some of the patients. In addition, the SF-36 quality of life score is self-reported and may be subject to individual interpretation and reporting biases.
More extended observation periods are expected to achieve an effect. In addition, it has been recently suggested that GD-specific patient-reported outcome measures (PROM) may be more relevant to showing small, meaningful changes, and these should be used in the subsequent study [7,8].
Collaboration with numerous experts is crucial for successfully integrating AI into healthcare. It ensures that AI systems are trained on precise, high-quality data and that their outputs are clinically relevant and safe for patient care. This is fundamental in advancing personalized medicine and improving patient outcomes [68].
In summary, CDP-based second-generation AI systems in patients with GD may improve their ERT response. More extensive and longer clinical trials with larger numbers of patients who have shown poor reactions to their medication are necessary in understanding better how variability-based regimens can be utilized in these patients.

Author Contributions

Y.I. and A.Z. conceptualized. N.H., T.D. and S.R.-V.: saw the patients, collected the data, and wrote the paper. M.B. and S.A. provided the app and analyzed the data. All authors reviewed the final version. All authors have read and agreed to the published version of the manuscript.

Funding

This research received no external funding.

Institutional Review Board Statement

Received. Subjects were enrolled in a single-center trial at the Gaucher Unit of the Shaare Zedek Medical Center in Jerusalem, Israel. The trial was registered at the Israeli Ministry of Health NIH GOV No NCT06050967; approval date: 5 January 2003.

Informed Consent Statement

Informed consent was obtained from all subjects involved in this study.

Data Availability Statement

Data available on request due to restrictions eg privacy or ethical.

Acknowledgments

The authors acknowledge the high number of self citations in this manuscript.

Conflicts of Interest

Y.I. is the founder of Oberon Sciences. S.A. is a consultant for Oberon Sciences. M.B. is a consultant of Area9. A.Z. is a co-founder of AGYANY Pharmaceuticals, a consultant to Takeda, and receives honoraria from Takeda, Pfizer, and ISU. S.R.-V. has received research grants, speaker fees, and travel support from Pfizer, Sanofi Genzyme, and Takeda.

Abbreviations

GD1, Gaucher Disease 1; Lyso-Gb1, glucosylsphingosine; ERT, enzyme replacement therapy; AI, artificial intelligence; CBC, complete blood count; SF-36, 36-item short-form survey; CDP, constrained disorder principle; PROM, patient-reported outcome measures (PROM).

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Jcm 13 03325 g001aJcm 13 03325 g001b
Figure 1. (A) Effect of intervention on SF-36 score. The SF-36 score was measured in 4 out of 5 patients before and after the intervention. (B) Effect of intervention on hemoglobin level. (C) Effect of intervention on serum platelet levels. (D) Effect of intervention on Lyso-Gb1 serum levels. Each color represents a patient follow-up encounter. Thus, the leftmost column (dark gray) represents recruitment for the study, the middle columns (lighter gray) represent two follow-up encounters during the study (2 months and 4 months post recruitment), and the rightmost column (black) represents study completion after 6 months.
Figure 1. (A) Effect of intervention on SF-36 score. The SF-36 score was measured in 4 out of 5 patients before and after the intervention. (B) Effect of intervention on hemoglobin level. (C) Effect of intervention on serum platelet levels. (D) Effect of intervention on Lyso-Gb1 serum levels. Each color represents a patient follow-up encounter. Thus, the leftmost column (dark gray) represents recruitment for the study, the middle columns (lighter gray) represent two follow-up encounters during the study (2 months and 4 months post recruitment), and the rightmost column (black) represents study completion after 6 months.
Jcm 13 03325 g001aJcm 13 03325 g001b
Table 1. Baseline characteristics.
Table 1. Baseline characteristics.
Age, median (range) 57.4 (37–65)
Male, number (%)3 (60)
Time since on Enzyme replacement therapy, median, Years26.8
High Lyso-GB1 levels2 (40%)
Gaucher disease complicationsAnemia 0
Thrombocytopenia 2 (40%)
Bone pain/osteonecrosis1 (20%)
s/p splenectomy2 (40%)
Concomitant diseasesParkinson’s disease (%)1 (20)
Table 2. An example of drug administration based on the randomization algorithm for one of the subjects in the study.
Table 2. An example of drug administration based on the randomization algorithm for one of the subjects in the study.
Administration time:
Days since recruitment		1143145627491104121135149165
Dosage3200200044008001200400080044003600160020003200
Administration time—hour8:309:458:459:009:308:157:157:009:007:459:008:45
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MDPI and ACS Style

Hurvitz, N.; Dinur, T.; Revel-Vilk, S.; Agus, S.; Berg, M.; Zimran, A.; Ilan, Y. A Feasibility Open-Labeled Clinical Trial Using a Second-Generation Artificial-Intelligence-Based Therapeutic Regimen in Patients with Gaucher Disease Treated with Enzyme Replacement Therapy. J. Clin. Med. 2024, 13, 3325. https://doi.org/10.3390/jcm13113325

AMA Style

Hurvitz N, Dinur T, Revel-Vilk S, Agus S, Berg M, Zimran A, Ilan Y. A Feasibility Open-Labeled Clinical Trial Using a Second-Generation Artificial-Intelligence-Based Therapeutic Regimen in Patients with Gaucher Disease Treated with Enzyme Replacement Therapy. Journal of Clinical Medicine. 2024; 13(11):3325. https://doi.org/10.3390/jcm13113325

Chicago/Turabian Style

Hurvitz, Noa, Tama Dinur, Shoshana Revel-Vilk, Samuel Agus, Marc Berg, Ari Zimran, and Yaron Ilan. 2024. "A Feasibility Open-Labeled Clinical Trial Using a Second-Generation Artificial-Intelligence-Based Therapeutic Regimen in Patients with Gaucher Disease Treated with Enzyme Replacement Therapy" Journal of Clinical Medicine 13, no. 11: 3325. https://doi.org/10.3390/jcm13113325

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