Application of apophyllite and thomsonite natural zeolite as modified adsorbents for the removal of zinc from acid mine drainage.

Materials composed of natural zeolite have the potential to serve as highly effective adsorbents in the treatment of wastewater. The present study explores zeolite resin-based Apophyllite and Thomsonite as adsorbents for removing Zinc from acid mine drainage solution. The characteristics of the natural zeolites (Apophyllites and Thomsonite) are investigated using X-ray diffraction, Fourier-transform infrared spectroscopy and Field emission scanning electron microscopy analysis. The removal of Zinc from AMD is explored, and the influence of metal ion concentration, resin dose, and pH is investigated using a batch exchange resin-based experimental method. Maximum zinc removal occurs in the pH range of 2-6 with an initial zinc content of 50-250 mg/L and a resin dosage of 25-700 mg/L, indicating that the adsorption process is pH-dependent. Various isotherm models, including those proposed by Freundlich and Langmuir as well as Redlich-Peterson, Dubinin, and Temkin, are used to verify the results of the experimental research. All these isotherm models' constants are determined. Both resins showed different sorption efficiencies at different operating conditions. However, highest Zn removal efficiency of 86.2% was observed for the Thomsonite zeolite resin whereas Apophyllite zeolite resin showed maximum Zn uptake of 81.6%. Thus, Thomsonite was found to be an effective sorbent.

Onychoscopy of Nail Lesions in Dermatological Disorders: A Cross-Sectional Observational Study.

Background: Nail disorders account for about 10% of all dermatological conditions. Onychoscopy is useful not only for their diagnosis but also for assessing severity/progression and monitoring the response to therapy. Aims and Objectives: Describing dermoscopic features of nail disorders in patients reporting to the dermatology OPD of our tertiary care hospital and recording the sociodemographic profiles thereof. Materials and Methods: This cross-sectional observational study was carried out on 176 patients with effect from August 2019 to August 2021. Results: Males (99; 56.25%) outnumbered females (77; 43.75%); males: female: 1.28: 1; their mean age was 35.8 years. Fingernails were affected more oftener (84.09%) than toenails (38.64%). Onychomycosis, the commonest (58;32.95%) condition, revealed findings of aurora borealis pattern (75.86%), subungual hyperkeratosis (72.41%), and onycholysis with jagged edges and spikes (68.97%). The next frequent (32;18.18%) condition was nail psoriasis which revealed pits (81.25%); onycholysis (62.5%) and dilated globose nail fold vessels on capillaroscopy (25%). Limitations: The small sample size proved inadequate for the evaluation of statistical significance in the less common conditions and the correlation of disease severity of many. Ideally, confirmatory diagnostic tests should have been done in every patient, as indicated. The magnification of our dermoscopy was 10X; 20- and 40X permit better capillaroscopy. Conclusions: Onychocopy can minimize the need for biopsy by highlighting subtle changes and helps narrow down the differentials. It is potentially a diagnostic test of choice in younger children. Our study helped to grade the severity of connective tissue disorders and establish the benignity of melanonychia. Photographic documentation facilitates record-keeping.

Association Between Comorbid Psychiatric Disorders and Persistent Smoking After a Diagnosis of Chronic Obstructive Pulmonary Disease Among Patients Seeking Treatment at a Tertiary Care Hospital in India.

Introduction Smoking cessation is the most effective approach to slowing down the progression of chronic obstructive pulmonary disease (COPD). Despite this, almost half of COPD patients continue to smoke after diagnosis. COPD patients with current smoking status are more likely to have concurrent psychiatric comorbidities, for instance, depression and anxiety. These psychiatric disorders can contribute to the persistence of smoking in individuals with COPD. This study aimed to investigate predictors of smoking persistence in COPD patients. Materials and methods A cross-sectional study was conducted in the Outpatient Department (OPD) of the Department of Pulmonary Medicine in a tertiary care hospital from August 2018 to July 2019. Patients with COPD were screened for their smoking status. All subjects were then personally assessed for any psychiatric comorbidity using the Mini International Neuropsychiatric Interview (MINI), the Patient Health Questionnaire-9 (PHQ-9), and the Anxiety Inventory for Respiratory (AIR) Disease. Logistic regression was performed to compute the odds ratio (OR).  Results The study included a total of 87 COPD patients. Of the 87 COPD patients, 50 were current smokers, and 37 were past smokers. COPD patients with psychiatric disorders were four times more likely to continue smoking than those without psychiatric comorbidities (OR: 4.62, 95% CI: 1.46-14.54). The results showed that increasing PHQ-9 scores by one unit in COPD patients increased the likelihood of continuing to smoke by 27 percent. Conclusion In our multivariate analysis, current depression was found as a significant predictor of continued smoking in COPD patients. The present results are consistent with reports from previous research that depressive symptoms are associated with continued smoking in patients with COPD. COPD patients who are currently smoking should be examined for psychiatric disorders and treated concurrently to achieve effective smoking cessation.

Psychometric Validity of the Anxiety Inventory for Respiratory Disease (AIR) Scale in an Indian Sample of Chronic Obstructive Pulmonary Disease: A Cross-Sectional Study.

Introduction Researchers have found that chronic obstructive pulmonary disease (COPD) patients suffer from anxiety more than the general population. The Anxiety Inventory for Respiratory Disease (AIR) scale has been primarily used to assess non-somatic anxiety in COPD patients. The validity of AIR among COPD patients has not been evaluated in Indian settings. Therefore, this study was undertaken to determine the validity of AIR in these patients. The study aimed to evaluate concurrent criterion and discriminative validity of the AIR screening scale among patients with COPD using Mini International Neuropsychiatric Interview (MINI) 7.0.2 as the gold standard measure for diagnosing Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) anxiety disorders. Materials and methods A cross-sectional study was conducted in the Outpatients Department (OPD) of the Department of Pulmonary Medicine, All India Institute of Medical Sciences (AIIMS), New Delhi, from August 2018 to July 2019. A total of 100 patients diagnosed with COPD and aged 30 or above were recruited. All participants were further assessed in person by a psychiatry resident doctor using semi-structured proforma, MINI 7.0.2, and AIR Disease (Hindi). Mann-Whitney U and receiver operating characteristic (ROC) curves were conducted. The two-sided p-value of less than 0.05 was considered to be statistically significant. Results To assess the concurrent criterion validity of the AIR scale for screening clinical anxiety disorders, the ROC curve was constructed using MINI diagnoses of anxiety disorder as the gold standard measure. A cut-off score of 5.5 was found to maximize both the specificity and sensitivity of the AIR scale for screening anxiety disorders among COPD patients with COPD. The AIR scale showed a high sensitivity (95%) and specificity (89%) at this cut-point. Conclusion The findings of this study recommend a cut-off score of 5.5 on the AIR scale instead of 8 in previous studies, as maintaining the previously recommended cut-offs in Indian settings may lead to an increase in false negatives. This could have negative consequences for patients seeking treatment. Further studies may be planned to explore the psychometric properties of the current tool in a larger population.

A New Conformationally Symmetrical Calix[4]pyrrole Based Supramolecular System for Liquid Crystalline and Window Layer Solar Cell Applications.

The newly symmetrical liquid crystalline compounds (CPB1 -CPB4 ) based on calix[4]pyrrole as central rigid core are synthesized via esterification reaction. All the four functionalized compounds exhibit columnar hexagonal phase (Colh ) over a higher mesophase temperature range and further stabilized mesophase upto room temperature. The thermal behavior and optical texture are identified by using differential scanning calorimetry (DSC), Polarizing optical microscopy (POM) while the molecular organization of compound in mesogenic state by X-ray diffraction technique. The molecular system based on calix[4]pyrrole core with symmetrical nature exhibited columnar type self-assembly at room temperature. All these four supramolecules with different side spacer show higher thermal stability. Based upon the optimization, compound CPB2 has been further tested to implicate as optical window layer in thin films solar cell devices. The calix[4]pyrrole functionalized supramolecular liquid crystalline compound based thin films showed suitable transmittance, optical energy band gap together with absorbance and extinction coefficient. The linear dependence of current on the voltage demonstrated Ohmic behavior of the CPB2 films. The surface morphology to the developed samples designated nearly uniform deposition of the CPB2 thin films together with grain growth. The findings warrant suitability of the films to implicate these as an eco-friendly optical window layer in thin films based solar cells.

A Cross-Sectional Study to Assess Sub-clinical Atherosclerosis in Patients of Psoriasis Independent of Metabolic Syndrome.

Background: A sustained inflammatory state of psoriasis causes comorbidities such as psoriatic arthritis, metabolic syndrome (MetS), and cardiovascular disease. Aims: To note the duration and severity of psoriasis, assess prevalence of MetS, and correlate these with indicators of sub-clinical atherosclerosis. Methodology: Thirty-two patients of chronic plaque psoriasis were enrolled in the study. Their demographic particulars, clinical details, results of investigations to assess MetS, and indicators of sub-clinical atherosclerosis, namely, carotid intimal media thickness (CIMT) measured using B-mode USG and epicardial fat thickness (EFT) using 2-D ECHO, were recorded. Results: The study participants were predominantly male (2.5:1); their mean age was 40.45 ± 12.42 years, the median disease duration (DD) was 2 years, and the mean psoriatic area severity index (PASI) score was 8.62 ± 7.49. Mild disease (PASI <5) was present in 12 participants (37.5%), and shorter DD (<5 years) was present in 16 (50%) participants. MetS, detected in 11 (37.5%) study participants, was not significantly associated with CIMT, EFT, DD, and PASI. CIMT and EFT too did not correlate significantly with DD, PASI, or measures of MetS. Neither did there exist any significant correlation between CIMT and EFT. Conclusion: Sub-clinical atherosclerosis in our study participants was not significantly associated with either measures of MetS or duration/severity of psoriasis.

Quality-of-life of people with keloids and its correlation with clinical severity and demographic profiles.

Although the impairment of quality of life (QoL) in individuals with keloids is profound, it has neither been well quantified nor correlated with severity in people with skin of colour. This cross-sectional, questionnaire-based study comprised 110 patients with keloid(s). A physician measured the severity of keloids using the Vancouver Scar scale and impairment of QoL using the patient-filled Hindi version of Dermatology Life Quality Index questionnaire. The relationship among QoL and severity score as well as with components of demographic data was analysed using SPSS. Our study found the severity of keloid(s) to be moderately but significantly correlated with the QoL of its sufferers. Individuals with multiple keloids were found to be significantly younger than those with solitary ones. Itching, pain, along with restricted mobility significantly impacted the QoL as well as severity of keloids. Individuals who had undergone prior treatment were found to have a worse QoL than the treatment naive. Recurrence was found to be associated with lower scar severity, multiple keloids, and younger age. Increasing age, though associated with greater scar severity, lacked any relationship with the QoL. Our study also found that individuals with bigger keloids sought treatment earlier and more often. Hyperpigmented keloid(s), more common in individuals with skin of colour, were associated with a significantly worse QoL and a higher scar severity.

Enhancement of Anticorrosive Performance of Cardanol Based Polyurethane Coatings by Incorporating Magnetic Hydroxyapatite Nanoparticles.

The present investigation demonstrates renewable cardanol-based polyol for the formulation of nanocomposite polyurethane (PU) coatings. The functional and structural features of cardanol polyol and nanoparticles were studied using FT-IR and 1H NMR spectroscopic techniques. The magnetic hydroxyapatite nanoparticles (MHAPs) were dispersed 1-5% in PU formulations to develop nanocomposite anticorrosive coatings. An increase in the strength of MHAP increased the anticorrosive performance as examined by immersion and electrochemical methods. The nanocomposite PU coatings showed good coating properties, viz., gloss, pencil hardness, flexibility, cross-cut adhesion, and chemical resistance. Additionally, the coatings were also studied for surface morphology, wetting, and thermal properties by scanning electron microscope (SEM), contact angle, and thermogravimetric analysis (TGA), respectively. The hydrophobic nature of PU coatings increased by the addition of MHAP, and an optimum result (105°) was observed in 3% loading. The developed coatings revealed its hydrophobic nature with excellent anticorrosive performance.

Dental enamel defects and oral cavity manifestations in Asian patients with celiac disease.

BACKGROUND: While the small intestine is the main site of disease, many other organs are affected by celiac disease (CeD). Dental enamel defects (DED) are common in patients with CeD, and these are one of the indicators of CeD, even when no other symptom of CeD is present. Data on dental and oral cavity manifestations in Asian patients with CeD are scanty. The purpose of the current study was to evaluate dental and oral manifestations in Asian patients with CeD. METHODS: We recruited 118 patients with biopsy-confirmed CeD (36 treatment naïve and 82 on follow-up for at least 1 year on gluten-free diet [GFD]) and 40 controls. Diagnosis was made as per the standard criteria. Oral and dental manifestations were evaluated by a dental surgeon. The DED were evaluated according to Aine's criteria. RESULTS: Overall higher number of patients with CeD (66.9%), both treatment naïve (69.4%) and those on GFD (65.8%) had DED in comparison to controls (20%) (odds ratio, 8.1, 95% confidence interval [CI] 3.4-19.2; p<0.001). Specific/bilaterally symmetrical DED were significantly higher in patients with CeD than controls. Recurrent aphthous ulcers were also significantly higher in patients with CeD. Approximately 80.6% and 63.4% treatment-naïve patients and those on GFD, respectively reported dry mouth sensation, which was significantly higher than the controls. CONCLUSION: Almost two-third of patients with CeD had DED. Physicians and dietitians caring for patients with CeD should be trained in identification of DED and other oral manifestations of CeD.

Emergence of Celiac disease and Gluten-related disorders in Asia.

Celiac disease (CeD) is a systemic, immune-mediated enteropathy, which is triggered by gluten protein in genetically susceptible individuals. CeD, once thought to be an uncommon disease, is now recognized to affect approximately 40-60 million people globally. While CeD is now well reported from a few Asian countries such as India, China, Pakistan, and Middle Eastern countries; it is still believed to be uncommon in the rest of Asia. Gluten-related diseases other than CeD, like non-celiac gluten sensitivity (NCGS) are also emerging globally. CeD and NCGS may present with either intestinal or extra-intestinal symptoms, and a proportion of them have overlapping symptoms with irritable bowel syndrome. Hence, many of them are misdiagnosed as having irritable bowel syndrome in clinical practice. In this review, we discuss the emergence of CeD and other gluten-related disorders, both globally and in Asia, the overlapping manifestations between gluten-related disorders and irritable bowel syndrome, and the challenges associated with diagnosis and management of CeD in Asia.

MoS2 and CdMoS4 nanostructure-based UV light photodetectors.

We have developed MoS2 nanosheets and CdMoS4 hierarchical nanostructures based on a UV light photodetector. The surface morphologies of the as-prepared samples were investigated via field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The performance parameters for the present photodetectors are investigated under the illumination of UV light having a wavelength of ∼385 nm. Upon the illumination of UV light, the CdMoS4-based photodetector device showed a better response to UV light compared to the MoS2 device in terms of photoresponsivity, response time (∼72 s) and recovery time (∼94 s). Our results reveal that CdMoS4 hierarchical nanostructures are practical for enhancing the device performance.

Acid treated RHWBAC electrode performance for Cr(VI) removal by capacitive deionization and CFD analysis study.

In this work acid-treated activated carbon was developed from rice husk, and it was used as raw material for Capacitive deionization (CDI) electrodes. The prepared acid treated rice husk waste biomass activated carbon (RHWBAC) electrode was used for the electrosorption of Cr(VI) from the aqueous medium. This RHWBAC electrode shows maximum electrosorption capacity was 2.8316 mg g-1 of initial feed concentration 100 mg L-1 at 1.2 V. The result shows that the electrosorption method follows Redlich Peterson isotherm, Langmuir isotherm model, and Pseudo first order kinetic model. The computational fluid dynamics (CFD) analysis of square CDI cell design shows that the stagnant regions decreases by increasing the flow rate of feed. The present work concluded that the RHWBAC could be capable electrode material for Cr(VI) sorption from low concentrated aqueous feed.

Management of Major Postcholecystectomy Biliary Injuries: An Analysis of Surgical Results in 62 Patients.

BACKGROUND: Management of injuries sustained during cholecystectomy requires expertise and involves a patient who is troubled, usually drained of personal resources. There has been an increase in incidence with laparoscopic cholecystectomy. The standard surgical management done for major biliary injuries is Roux-en-Y Hepaticojejunostomy (R-en-Y HJ). MATERIALS AND METHODS: Patients managed surgically for definitive management of biliary injuries in the form of R-en-Y HJ were included. Data were collected from prospectively maintained records and through outpatient follow-up. Demographic data, early and late surgical complications, long-term outcomes, and follow-up results were analyzed. RESULTS: Among the 62 patients, 26 were males, with a mean age of 37.4 ± 13.5 years. A total of 24 patients presented with ongoing biliary fistula. The Strasberg-Bismuth type of injury included types E1 in 8 (13%), E2 in 31 (50%), E3 in 19 (30.6%), and E4 in four patients (6.4%). There were no postoperative mortality and morbidity in 27.4% of patients. Atrophy-hypertrophy complex was seen in four patients, vascular injury in six patients, and an internal fistulisation with duodenum in two patients. Presence of comorbidities (P = 0.05), male gender (P = 0.03), tobacco use (P = 0.04), low albumin (P = 0.016), and more proximal (E4-E1) type of injury (P = 0.008) were independent predictors of postoperative morbidity (P < 0.05). The mean duration of patient follow-up was 26.2 ± 21.1 months. CONCLUSION: Optimization of preoperative nutrition, avoidance of intraoperative blood transfusion, proper timing of repair, and tension-free R-en-Y HJ draining all the ducts which is done at an experienced hepatobiliary center provide the best outcome.

Temperature-dependent Raman spectroscopy and sensor applications of PtSe2 nanosheets synthesized by wet chemistry.

We report on a wet chemistry method used to grow PtSe2 nanosheets followed by thermal annealing. The SEM and TEM analysis confirms the formation of PtSe2 nanosheets. Furthermore, XRD, Raman, XPS and SAED patterns were used to analyze the crystal structure and to confirm the formation of the PtSe2 phase. The temperature-dependent Raman spectroscopy investigations were carried out on PtSe2 nanosheets deposited on Si substrates in the temperature range 100-506 K. The shifts in Raman active Eg and A1g modes as a function of temperature were monitored. The temperature coefficient for both modes was calculated and was found to match well with the reported 2D transition metal dichalcogenides. A PtSe2 nanosheet-based sensor device was tested for its applicability as a humidity sensor and photodetector. The humidity sensor based on PtSe2 nanosheets showed an excellent recovery time of ≈5 s, indicating the great potential of PtSe2 for future sensor devices.

A Comparative Dose-response Relationship Between Sexes for Mortality and Morbidity of Radiation-induced Lung Injury in the Rhesus Macaque.

Radiation-induced lung injury is a characteristic, dose- and time-dependent sequela of potentially lethal, delayed effects of acute radiation exposure. Understanding of these delayed effects to include development of medical countermeasures requires well-characterized and validated animal models that mimic the human response to acute radiation and adhere to the criteria of the US Food and Drug Administration Animal Rule. The objective herein was to establish a nonhuman primate model of whole-thorax lung irradiation in female rhesus macaques. Definition of the dose-response relationship to include key signs of morbidity and mortality in the female macaque served to independently validate the recent model performed with male macaques and importantly, to establish the lack of sex and institutional bias across the dose-response relationship for radiation-induced lung injury. The study design was similar to that described previously, with the exception that female rhesus macaques were utilized. In brief, a computed tomography scan was conducted prior to irradiation and used for treatment planning. Animals in 5 cohorts (n = 8 per cohort) were exposed to a single 6-MV photon exposure focused on the lung as determined by the computed tomography scan and treatment planning at a dose of 9.5, 10, 10.5, 11, or 11.5 Gy. Subject-based supportive care, including administration of dexamethasone, was based on trigger-to-treat criteria. Clearly defined euthanasia criteria were used to determine a moribund condition over the 180-day study duration post-whole-thorax lung irradiation. Percent mortality per radiation dose was 12.5% at 9.5 Gy, 25% at 10 Gy, 62.5% at 10.5 Gy, 87.5% at 11 Gy, and 100% at 11.5 Gy. The resulting probit plot for the whole-thorax lung irradiation model estimated an LD50/180 of 10.28 Gy, which was not significantly different from the published estimate of 10.27 Gy for the male rhesus. The key parameters of morbidity and mortality support the conclusion that there is an absence of a sex influence on the radiation dose-response relationship for whole-thorax lung irradiation in the rhesus macaque. This work also provides a significant interlaboratory validation of the previously published model.

INDEX-db: The Indian Exome Reference Database (Phase I).

Deep sequencing-based genetic mapping has greatly enhanced the ability to catalog variants with plausible disease association. Confirming how these identified variants contribute to specific disease conditions, across human populations, poses the next challenge. Differential selection pressure may impact the frequency of genetic variations, and thus detection of association with disease conditions, across populations. To understand genotype to phenotype correlations, it thus becomes important to first understand the spectrum of genetic variation within a population by creating a reference map. In this study, we report the development of phase I of a new database of genetic variations called INDian EXome database (INDEX-db), from the Indian population, with an aim to establish a centralized database of integrated information. This could be useful for researchers involved in studying disease mechanisms at clinical, genetic, and cellular levels.

Transcriptomic signature reveals mechanism of flower bud distortion in witches'-broom disease of soybean (Glycine max).

BACKGROUND: Soybean (Glycine max L. Merril) crop is major source of edible oil and protein for human and animals besides its various industrial uses including biofuels. Phytoplasma induced floral bud distortion syndrome (FBD), also known as witches' broom syndrome (WBS) has been one of the major biotic stresses adversely affecting its productivity. Transcriptomic approach can be used for knowledge discovery of this disease manifestation by morpho-physiological key pathways. RESULTS: We report transcriptomic study using Illumina HiSeq NGS data of FBD in soybean, revealing 17,454 differentially expressed genes, 5561 transcription factors, 139 pathways and 176,029 genic region putative markers single sequence repeats, single nucleotide polymorphism and Insertion Deletion. Roles of PmbA, Zn-dependent protease, SAP family and auxin responsive system are described revealing mechanism of flower bud distortion having abnormalities in pollen, stigma development. Validation of 10 randomly selected genes was done by qPCR. Our findings describe the basic mechanism of FBD disease, right from sensing of phytoplasma infection by host plant triggering molecular signalling leading to mobilization of carbohydrate and protein, phyllody, abnormal pollen development, improved colonization of insect in host plants to spread the disease. Study reveals how phytoplasma hijacks metabolic machinery of soybean manifesting FBD. CONCLUSIONS: This is the first report of transcriptomic signature of FBD or WBS disease of soybean revealing morphological and metabolic changes which attracts insect for spread of disease. All the genic region putative markers may be used as genomic resource for variety improvement and new agro-chemical development for disease control to enhance soybean productivity.

The Future State of Newborn Stem Cell Banking.

Newborn stem cell banking began with the establishment of cord blood banks more than 25 years ago. Over the course of nearly three decades, there has been considerable evolution in the clinical application of stem cells isolated from newborn tissues. The industry now finds itself at an inflection point as personalized medicine and regenerative medicine continue to advance. In this review, we summarize our perspective on newborn stem cell banking in the context of the future potential that stem cells from perinatal tissues are likely to play in nascent applications. Specifically, we describe the relevance of newborn stem cell banking and how the cells stored can be utilized as starting material for the next generation of advanced cellular therapies and personalized medicine.

Repurposing the Cord Blood Bank for Haplobanking of HLA-Homozygous iPSCs and Their Usefulness to Multiple Populations.

Although autologous induced pluripotent stem cells (iPSCs) can potentially be useful for treating patients without immune rejection, in reality it will be extremely expensive and labor-intensive to make iPSCs to realize personalized medicine. An alternative approach is to make use of human leukocyte antigen (HLA) haplotype homozygous donors to provide HLA matched iPSC products to significant numbers of patients. To establish a haplobank of iPSCs, we repurposed the cord blood bank by screening ∼4,200 high resolution HLA typed cord blood samples, and selected those homozygous for the 10 most frequent HLA-A,-B,-DRB1 haplotypes in the Korean population. Following the generation of 10 iPSC lines, we conducted a comprehensive characterization, including morphology, expression of pluripotent markers and cell surface antigens, three-germ layer formation, vector clearance, mycoplasma/microbiological/viral contamination, endotoxin, and short tandem repeat (STR) assays. Various genomic analyses using microarray and comparative genomic hybridization (aCGH)-based single nucleotide polymorphism (SNP) and copy number variation (CNV) were also conducted. These 10 HLA-homozygous iPSC lines match 41.07% of the Korean population. Comparative analysis of HLA population data shows that they are also of use in other Asian populations, such as Japan, with some limited utility in ethnically diverse populations, such as the UK. Taken together, the generation of the 10 most frequent Korean HLA-homozygous iPSC lines serves as a useful pointer for the development of optimal methods for iPSC generation and quality control and indicates the benefits and limitations of collaborative HLA driven selection of donors for future stocking of worldwide iPSC haplobanks. Stem Cells 2018;36:1552-1566.