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This paper discusses the variability in COVID-19 susceptibility and severity, emphasizing factors like biological differences and suggesting potential precision medicine approaches, but it reports no new clinical results.

Genetic differences may influence male pattern hair loss in Russians.

In this study, researchers found that the variability in growth factor expression, particularly TGFβ1, in PRP samples could influence patient responses to hair loss treatment with PRP therapy.

This study found that keratin phenotypes were consistent across different types of hair from the same individual, allowing for successful keratin typing following ABH blood group determination.

In this study, researchers investigated genetic variants in pharmacogenes affecting tadalafil and finasteride pharmacokinetics, finding fed volunteers had higher drug exposure than fasting individuals, but genetic variation did not significantly impact pharmacokinetics after correcting for multiple comparisons.

The researchers identified a specific mutation in the desmoglein 4 gene linked to localized autosomal recessive hypotrichosis, which presents with variable hair loss severity in affected individuals from a large Pakistani family.

This study found that electrophoretic keratin typing of head hair can identify specific polypeptide patterns, suggesting potential applications in genetic and forensic investigations.

In this study, FAPD was characterized in a Chinese population by perifollicular mast cell infiltration, suggesting young individuals may be at higher risk than previously thought.

The study suggests that variability in platelet-derived growth factors in PRP is influenced by both patient-to-patient differences and the devices used for PRP preparation, contributing to inconsistent clinical outcomes in hair loss treatments.

The authors concluded that establishing and standardizing methods for data collection are crucial to improving PCOS diagnosis and research due to challenges observed in data harmonization across diverse international cohorts.

This study explored 25-hydroxyvitamin D3 levels in hair samples from participants in Aberdeen and suggested potential links between hair vitamin D levels, seasonal UVB exposure, and marine diet in both modern and archaeological contexts.

This review identifies significant variability in insurance coverage for gender-affirming surgeries in the US, affecting equitable access to care for transgender individuals and suggesting a need for health policy reforms.

This study observed significant inter- and intra-individual variability in serum testosterone levels among women treated with subcutaneous testosterone implants, suggesting that therapy should be guided by clinical response rather than single serum measurements.

This study found no strong evidence that the human hairless gene is significantly involved in the development of androgenetic alopecia, though a minor role cannot be completely ruled out.

This article reviews factors affecting follicular unit extraction, emphasizing the need to tailor procedures to individual patient characteristics, but reports no new experimental findings.

This review discusses the role of androgen therapy and neurosteroids in cerebrovascular health, highlighting the potential risks and benefits and the importance of pharmacogenetic testing, but reports no new experimental results.

This systematic review synthesizes evidence on the distribution of 5a-reductase isozymes and their implications for mental health, finding that inhibition of neurosteroidogenesis may contribute to anxiety, depression, and suicidality, with some patients experiencing persistent psychiatric effects from finasteride or dutasteride.

This review discusses the variability of hair protein keratin in forensic hair comparison, focusing on species identification and individual discrimination, but it reports no new results.

This study found that dermoscopy of the axilla in patients with frontal fibrosing alopecia revealed significantly higher odds of brownish peripillary halos, suggesting a diagnostic clue for the condition in this region.

This article describes newly designed tools that reportedly ease and enhance hair transplantation surgery by improving precision, reducing graft trauma, and monitoring essential conditions.

This study analyzed blood samples from individuals with alopecia areata and found that NKG2D+ immune cells, particularly memory-like NK cells, may better correlate with disease activity compared to CD8+ cells, though significant variability among individuals complicates these findings.

In this study, mutations in the CDH3 gene were identified as the cause of hypotrichosis with juvenile macular dystrophy, and the researchers observed substantial phenotypic variability among affected individuals.

This study describes three new cases of MCOPS6 with BMP4 variants, noting expanded phenotypic variability but no clinically apparent microphthalmia in these individuals, which is commonly reported in the disorder.

This study reported that seed germination and root hair growth were significantly enhanced after exposure to an individual whose depression was treated with Emotional Freedom Techniques, suggesting that human mood may influence seed viability.

This study describes the establishment of a hair clinic in Bogotá aimed at providing affordable hair restoration treatments for middle-income individuals, focusing on market, technical, administrative, and financial analyses to ensure business viability.

This review highlights the potential of permeation enhancers to improve the delivery of active ingredients across the skin, optimizing therapeutic outcomes despite challenges posed by individual variability and environmental factors, according to the authors' analysis of current understanding and applications in skincare and transdermal therapies.

This study found that oral estradiol was generally effective in achieving target 17-β estradiol levels in transgender women, but often failed to suppress testosterone adequately, with variability in individual responses.

In this study, hair samples from Mexican women were found to be intermediate in diameter and shape between Asian and Caucasian hair, exhibiting high intra- and inter-individual variability and unexpected levels of tensile damage.

In this review, researchers explored hair as a promising tool for identifying biomarkers in schizophrenia, highlighting its potential for supporting personalized medicine through ease of sampling, though acknowledging challenges like individual variability and methodological inconsistencies.

This review highlights the potential of extracellular vesicles derived from medicinal plants as therapeutics for diseases such as cancer and inflammation, suggesting they may enhance the clinical use of herbal preparations, despite the challenges posed by extract complexity and individual variability.