Allergic disorders rising in prevalence globally, affecting a substantial proportion of individuals in industrialized nations. The imbalance in the immune system, characterized by elevated allergen-specific T helper 2 (Th2) cells and immunoglobulin E (IgE) antibodies, is a key factor in allergy development. Allergen-specific immunotherapy (AIT) is the only treatment capable of alleviating allergic symptoms, preventing new sensitizations, and reducing asthma risk in allergic rhinitis patients. Traditional AIT, however, faces challenges such as frequent administration, adverse effects, and inconsistent patient outcomes. Nanoparticle-based approaches have emerged as a promising strategy to enhance AIT. This review explores the utilization of nanoparticles in AIT, highlighting their ability to interact with the immune system and improve therapeutic outcomes. Various types of nanoparticles, including polyesters, polysaccharide polymers, liposomes, protamine-based nanoparticles (NPs), and polyanhydrides, have been employed as adjuvants or carriers to enhance AIT’s efficacy and safety. Nanoparticles offer advantages such as allergen protection, improved immune response modulation, targeted cell delivery, and reduced side effects. This review provides an overview of the current landscape of nanoparticle-based allergen immunotherapy, discussing its potential to revolutionize allergy treatment compared to traditional immunotherapy.

Cancer stem cells (CSCs) participate in cancer initiation, metastasis, and therapy tolerance, presenting a formidable challenge in cancer treatment. Antibody-drug conjugates (ADCs) have been established as a potential strategy for selectively targeting and eradicating CSCs, thereby overcoming resistance mechanisms and preventing tumor recurrence. ADCs integrate a monoclonal antibody specific to CSC surface markers, such as CD44, CD133, EpCAM, and ALDH1, with a potent cytotoxic payload linked by a stable chemical linker. Upon antigen binding, ADCs undergo receptor-mediated internalization, leading to intracellular payload release and CSC apoptosis. Recent advances in ADC technology have enhanced selectivity and efficacy while minimizing off-target toxicity. Preclinical studies demonstrate that CSC-targeted ADCs, including CD133- and CD44-directed therapies, effectively deplete CSC populations in glioblastoma, breast, colorectal, and lung cancers. EpCAM-targeted ADCs have also shown efficacy in epithelial tumors with potential synergy in combination immunotherapies. Moreover, emerging approaches, such as bispecific antibodies and optimized linker chemistry, further refine CSC-targeted ADCs for clinical applications. Despite these advancements, challenges remain, including CSC heterogeneity, immune evasion, and limitations in biomarker specificity. Addressing these hurdles requires continued innovation in ADC engineering, novel payloads, and combinatory strategies with immune checkpoint inhibitors or CAR-T cell therapies. While clinical evaluations are still in the early phases, preliminary trials underscore the potential of CSC-targeted ADCs in revolutionizing precision oncology. This review explores the mechanisms, recent developments, and prospects of CSC-targeted ADCs, highlighting their transformative potential in cancer immunotherapy.

Personalized medicine is a healthcare approach that designs treatment plans of each patient, considering genetic, environmental, and lifestyle factors. This model leverages genomic information, advanced diagnostics, and data analytics to predict disease risk, optimize prevention strategies, and provide customized treatments. In Saudi Arabia, personalized medicine is gaining momentum, driven by the country’s Vision 2030 initiative, which aims to transform the healthcare sector by integrating advanced medical technologies and improving healthcare delivery. The Kingdom has made significant strides in genomics and bioinformatics, with initiatives such as the Saudi Human Genome Program and advancements in institutions i.e., King Faisal Specialist Hospital and Research Centre. Continued investment in research, education, and technology, alongside international collaborations, will be crucial in overcoming these challenges and realizing the full potential of personalized medicine. This review explores the current state, challenges, and future prospects of personalized medicine in Saudi Arabia, highlighting its transformative impact on healthcare delivery and patient outcomes.

Prostate cancer (PCa) is one of the most common cancers in men, distinguished by a multifaceted pathogenesis that involves substantial epigenetic modifications. This article emphasizes the critical role of chromatin remodeling in PCa advancement. Chromatin remodeling, a key epigenetic mechanism, influences gene expression by modulating the chromatin structure through the action of specialized complexes such as SWI/SNF, ISWI, CHD, & INO80, thereby regulating genes vital to tumor progression. A comprehensive literature search was conducted using PubMed, Web of Science, and Scopus databases for studies published between 2000 and 2025, focusing on chromatin remodeling, epigenetic alterations, and therapeutic strategies in PCa. The review discusses the major epigenetic changes observed in PCa, including DNA and RNA methylation, histone modifications, and non-coding RNA (ncRNA)-mediated chromatin remodeling. The evolving epigenetic landscape shaped by these alterations offers insights into novel therapeutic opportunities. The clinical relevance of targeting chromatin remodeling complexes is explored, alongside existing therapies and potential future interventions. This review also addresses challenges in studying chromatin remodeling and highlights emerging technologies that could enhance understanding of PCa epigenetics. This comprehensive exploration underscores the promise of chromatin remodeling as both a biomarker and a therapeutic target in PCa management.

Background: Despite the cardiometabolic benefit of semaglutide, its impact on quality of life and whether patients’ characteristics influence clinical outcomes and health-related quality of life (HRQoL) remain ambiguous. Method: A retrospective review of patient charts was conducted after semaglutide initiation to assess the clinical impact of semaglutide, followed by a prospective analysis to evaluate HRQoL using the 36-Item Short Form Health Survey (SF-36). Descriptive and correlative analyses were conducted using SPSS software version 29 (IBM Corp., Armonk, NY, USA). Results: From a total of 715 patients, 255 (average age 59.1 years; 58.1% male participants) were subjected to clinical outcome analysis. The use of semaglutide was associated with significant reductions in HbA1c, total bilirubin, and TG and elevations in T4, TSH, Scr, and HDL. When each fifth value of each clinical parameter was compared with the baseline, gender revealed a significant impact, as females showed increased rates of elevated HDL (73.2% vs. 55.7%), reduced weight (69.8% vs. 55.7%), and reduced BMI (72.5% vs. 53.8%) compared to those in males. Despite the number of comorbidities significantly influencing BMI (p = 0.015), it had no impact on HbA1c post semaglutide use (p = 0.062). The same number of patients (n = 255), albeit having slightly different demographic and clinical characteristics, was included in the HRQoL analysis cohort. Females represented 54.5% of the cohort, and 71.0% were aged between 40 and <65 years. The average scores for all domains within the physical component summary (PCS) and mental component summary (MCS) were below 50, indicating a lack of perceived improvement in the overall quality of participants’ lives considering the pre-treatment period as the basis of comparison. In particular, younger age [OR 0.975, CI95% 0.953–0.998, p = 0.033] and being female [OR 0.273, CI95% 0.162–0.459, p < 0.001] led to reduced odds of scoring ≥ 50 in PCS, indicating a poor physical health state. On the contrary, older age [OR 1.036, CI95% 1.011–1.06, p = 0.004] increased the odds of scoring ≥ 50 in MCS, indicating a better mental health state in elderly vs. young semaglutide users. Although education level had significant influence on PCS, this did not extend to MCS. Upon investigating if type of change in a clinical parameter correlates with PCS and MCS scoring, only the decline in T4 reduced the odds of scoring MCS ≥ 50 [OR 0.5, CI95% 0.274–0.913, p = 0.024], while no significant influence was found either with other parameters or between clinical parameters and PCS. Conclusions: A lack of perceived improvement in HRQoL is noted with semaglutide use. Age, gender, and education play significant roles in HRQoL post semaglutide initiation. Overall, before prescribing semaglutide, patient counseling on its positive and negative effects is crucial to promote long-term adherence and optimize clinical outcomes.