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Objectives: To assess the effect of cryotherapy on haemostasis, post-operative pain, and the outcome of full pulpotomy performed in mature permanent teeth with symptomatic irreversible pulpitis. Materials and methods: The study included sixty mature permanent mandibular molar teeth with symptomatic irreversible pulpitis and no periapical rarefaction. After coronal pulp tissue amputation, teeth were randomly allocated to one of two groups (n = 30 each). In group I (conventional pulpotomy), a sterile cotton pellet moistened with 2.5% NaOCl was used for haemostasis. In group II (cryotherapy), the pulp chamber was continuously lavaged with 2.50C normal saline solution for haemostasis using an indigenous portable cryotherapy irrigation unit. Following haemostasis, the pulp was capped with mineral trioxide aggregate and the tooth was restored with resin composite. The time taken to achieve haemostasis was recorded. Preoperative and 24, 48 and 72 h postoperative pain was measured using the Numerical Rating Scale. The pulpotomy outcome was assessed at the 12-month follow-up. Data were analyzed using Fischer’s exact test, two-sample t-test, two-sample Wilcoxon rank-sum test, Friedman Test, and Wilcoxon Signed Rank Test. Results: The cryotherapy group achieved haemostasis in less time (p < 0.05). There was a significant pain reduction at 24 and 48 h in the cryotherapy group when compared with the conventional pulpotomy group (P < 0.005). The overall success rate of pulpotomy after 12 months was 88% (n = 22) in both study groups(p < 0.05). Conclusions: Cryotherapy application reduces postoperative pain and has no adverse effect on the outcome of pulpotomy in permanent teeth with symptomatic irreversible pulpitis. Clinical relevance: The cryotherapy can be incorporated in pulpotomy protocol as an adjunct to minimize post-operative pain. [ABSTRACT FROM AUTHOR]

Purpose: The search for an ideal Hypospadias repair dressing continues. We aimed to develop a hypoallergenic optimized biocompatible dressing (BD). Method: BD with a multi-layered structure of hydrophilic treated Polypropylene with three-layered technologies; Absorbent-spunlaced hydroentangled polyester/viscose blend, outer Polypropylene, Polyester, Acrylic, and Spandex, with super Absorbent Polymer and Acrylic adhesive. Wistar rat abdominal wound model was divided into two groups: control (normal gauze dressing with adhesive) and Study (BD). The physical properties and wound characteristics were compared. Results: Average mass: thickness of BD was 626.7 ± 5.6 g m−2: 2.6 ± 0.015 mm. Absorption was 1425.2 ± 127.6%. Percentage desorption of solution A from dressings at 24:40 h was 1249 ± 150%:1417 ± 230%. BD was hydrophilic with no particles/residue after immersion and pH neutral. The average air permeability was 11.6 ± 1.6 cm3/cm2/sec. The tensile force was 200N–220N with an extension on the breaking point at 24 mm. BD was superior for ease of removability on Day 6 (p = 0.012) and sticking quality (p = 0.036), absorption (p = 0.036), ease of removability(p = 0.036), and sustenance (p = 0.030) on Day 10. BD dressing demonstrated better wound healing (p = 0.015) and decreased redness (p = 0.002) on Day 10. Histopathological healing was better with BD on Day 14(p = 0.025) and Day 20 (p = 0.034). Conclusion: BD demonstrated better desirable physical and wound healing qualities with less inflammation compared with control normal dressing. [ABSTRACT FROM AUTHOR]

The diagnosis of chronic pulmonary aspergillosis (CPA) is established by combined clinic-radio-microbiological criteria. Out of the different microbiological criteria, a positive serology for Aspergillus-specific IgG levels is the cornerstone of diagnosis. Alternatively, other microbiological evidence are sometimes sought viz., positive Aspergillus antigen (broncho-alveolar lavage fluid, i.e., BALF galactomannan ≥ 1.0), histopathological demonstration of the fungi following lung biopsy or resection, demonstration of hyaline septate hyphae in direct microscopy resembling Aspergillus spp. or its growth on a respiratory specimen. However, the exact roles of BALF- GM and the newer BALF-PCR have not been confirmed by studies till date. This study enrolled 210 patients with suspected CPA. Of the participants, 88 patients met the criteria for CPA, whereas 122 patients had an alternative diagnosis. The sensitivity—specificity of AsperGenius® PCR and "in-house" PCR were 52.27(36.69–67.54) %—33.78 (23.19–45.72) % and 36.36 (22.41–52.23) %—39.19 (28.04–51.23) % respectively. The sensitivity/specificity of BALF (> 1.0) and serum galactomannan (> 1.0) were 46.55% (33.34–60.13)/64.08% (54.03–73.3) and 29.82% (22.05–37.6)/86.84% (81.1–92.59) respectively. The optimal cut-off values for BALF-Galactomannan and serum galactomannan in diagnosing CPA were found to be 0.69 (sensitivity: 64%; specificity: 53%) and 0.458 (sensitivity: 67%; specificity: 64%) respectively. This results of this study suggests that Aspergillus PCR from BAL may not be a good "rule-in" test for diagnosing CPA. While the performances of GM in BAL and serum may be better than PCR, it should be best used in conjunction with other clinical, radiological, and other microbiological characteristics. [ABSTRACT FROM AUTHOR]

Background/Purpose: This study aims to assess lifestyle-related factors such as diet, physical activity and sleep along with common myths, beliefs, and barriers to a healthy lifestyle and resultant postpartum weight retention. It has also explored the association of the aforementioned factors with socio-demographic variables. Methods: A cross-sectional survey was conducted using a comprehensive pre-validated questionnaire on a convenience sample of postpartum women using a telephonic interview schedule. Results: A total of 505 postpartum women were recruited with median postpartum weight retention of 5 kg. More than half of the participants had incorrect dietary practices with less than one-tenth of women indulging in low/moderate-intensity physical activity. Postpartum women had poorer diet (p < 0.05) and sleep (p < 0.01) in the initial phase postpartum as compared to late postpartum. These women were also less physically active in the initial months and as the postpartum period progressed their physical activity also improved significantly (p < 0.001). Socio-demographic variables such as socio-economic status, education, and employment status were significantly associated with unhealthy lifestyle practices. Common barriers were lack of knowledge, time constraints, lack of childcare support and cultural myths and beliefs. Conclusion: The findings of the study will help in developing a comprehensive women-centric weight management module focusing on practical guidelines for lifestyle, breastfeeding and other confounding factors associated with postpartum weight management. [ABSTRACT FROM AUTHOR]

Background: Rapid conversion from prediabetes to diabetes and frequent postprandial hyperglycemia (PPHG) is seen in Asian Indians. These should be the target of dietary strategies. Objectives: We hypothesized that dietary intervention of preloading major meals with almonds in participants with prediabetes will decrease overall glycemia and PPHG. Design: The study included two phases: (1) an oral glucose tolerance test (OGTT)-based crossover randomized control study, the effect of a single premeal almond load (20 g) given before OGTT was evaluated (n = 60, 30 each period). (2) The continuous glucose monitoring system (CGMS)-based study for 3 days including premeal almond load before three major meals was a free-living, open-labeled, crossover randomized control trial, where control and premeal almond load diets were compared for glycaemic control (n = 60, 30 in each period). The study was registered at clinicaltrials.gov (registration no. NCT04769726). Results: In the OGTT-based study phase, the overall AUC for blood glucose, serum insulin, C-peptide, and plasma glucagon post-75 g oral glucose load was significantly lower for treatment vs. control diet (p < 0.001). Specifically, with the former diet, PPHG was significantly lower (18.05% in AUC on OGTT, 24.8% at 1-h, 28.9% at 2-h post OGTT, and 10.07% during CGMS). The CGMS data showed that premeal almond load significantly improved 24-glucose variability; SD of mean glucose concentration and mean of daily differences. Daily glycaemic control improved significantly as per the following: mean 24-h blood glucose concentration (M), time spent above 7.8 mmol/L of blood glucose, together with the corresponding AUC values. Premeal almond load significantly decreased following: overall hyperglycemia (glucose AUC), PPHG, peak 24-h glycaemia, and minimum glucose level during night. Conclusion: Incorporation of 20 g of almonds, 30 min before each major meal led to a significant decrease in PPHG (as revealed in OGTT-based study phase) and also improved insulin, C-peptide, glucagon levels, and improved glucose variability and glycemic parameters on CGMS in participants with prediabetes. Clinical trial registry: The study was registered at clinicaltrials.gov (registration no. NCT04769726). [ABSTRACT FROM AUTHOR]

Introduction: The study aimed to evaluate COVID-19 associated psychological distress among pregnant and postpartum women during the second wave of COVID-19 in India. Methods: A cross-sectional survey was done using a pre-validated tool involving 491 participants attending a tertiary-care hospital during the second wave of COVID-19 in India. Results: Three-fourths of participants experienced negative emotions such as fear and various features of depression. Participants (75%) reported COVID-related news on TV/Radio/Newspapers including social media as the major trigger for these negative emotions. Loss of social support mainly affected postpartum women (p < 0.001) and working women (p < 0.001). Inability to access healthcare services had negative associations with age (p < 0.001), education (p < 0.001), and socioeconomic class (p < 0.001). Various coping strategies being followed by participants included watching TV/Videos or reading books (93%), resorting to social media (77%), spending more time praying and meditating (86%), and engaging in hobbies (56%). Conclusion: During the second wave, the COVID-19 pandemic had a significantly high negative impact on the psychological and social well-being of pregnant and postpartum women. Hence, it is important to initiate appropriate preventive and corrective steps by the policymakers for any future waves of the pandemic. [ABSTRACT FROM AUTHOR]

Purpose: The aim of the present study was to assess the effect of Bacillus coagulans Unique IS-2 supplementation on absorption and utilization of protein in resistance-trained males. Methods: In this double blind, placebo-control trial, resistance-trained males (21.08 ± 2.84 years) were randomized to consume, either 20 g of whey protein powder {80% whey protein concentrate (WPC80), amounting to 15.4 g protein} with 2 billion CFU Bacillus coagulans Unique IS-2 (supplemental group) or 20 g of whey protein powder and lactose instead of Bacillus coagulans (placebo group) once daily for 60 days with a controlled resistance exercise protocol. The whey protein concentrate (WPC-80) given to both groups had a lactose content of 6.8%. Plasma-free amino acids (PFAAs) were determined at baseline, at 30 and 60 days of supplementation. Muscle strength, hypertrophy, VO2 max, and body composition, and other biochemical parameters were assessed at baseline and end line. Results: A positive effect of probiotic Bacillus coagulans Unique IS-2 supplementation was observed on protein absorption as evidenced by an increase in total PFAA by + 16.1% (p = 0.004). Branched chain amino acids (BCAA) comprising isoleucine (p = 0.016), leucine (p = 0.001), and valine (p = 0.002) were increased by + 33.1% in ITT analysis as compared to placebo after 60 days. At 30 days an increase in isoleucine by + 35% (p = 0.113), leucine by + 43% (p = 0.032), and valine by + 32% (p = 0.017) was observed in ITT analysis. Probiotic effect was shown on exercise performance as evidenced by an increase in one RM of leg press and vertical jump power by + 16.61% (p = 0.024) and + 7.86% (p = 0.007), respectively. Conclusion: Significantly increased absorption of BCAA with supplementation of B. coagulans Unique IS-2 along with whey protein and improvement in leg press and vertical jump power was noted indicating the positive effect of the probiotic on muscle power in the lower body. Trial registration number: CTRI/2017/03/008117; Date:16.03.2017. [ABSTRACT FROM AUTHOR]

Background: Postpartum period is associated with significant weight retention and weight gain. The aim of this study was to develop and validate a comprehensive questionnaire to assess the risk factors, facilitators, and barriers to postpartum weight management. Methodology: The development and validation were done in five major steps by applying a mixed-method study design. Items were generated through literature review, focus group discussions, and in-depth interviews, followed by the assessment of content validity, face validity, construct validity, and reliability. Result: The final questionnaire comprises 36 items which are split into five major domains assessing perceptions related to body weight, eating behaviour, physical activity, sleep pattern, and beliefs/myths associated with postpartum period. The questionnaire has a satisfactory construct validity through factor analysis (65.12) and good internal consistency and reliability with a Cronbach's alpha of 0.79. Conclusion: This is a comprehensive tool to assess the risk factors, facilitators, and barriers to postpartum weight management and will aid in developing women centric strategies to curb the problem. [ABSTRACT FROM AUTHOR]

To study the clinical, laboratory characteristics and outcomes of multisystem inflammatory syndrome in children (MIS-C) temporally related to coronavirus disease 2019 (COVID-19) in a resource-limited setting. All children meeting the World Health Organization case definition of MIS-C were prospectively enrolled. Baseline clinical and laboratory parameters were compared between survivors and non-survivors. Enrolled subjects were followed up for 4–6 weeks for evaluation of cardiac outcomes using echocardiography. The statistical data were analyzed using the stata-12 software. Thirty-one children with MIS-C were enrolled in an 11-month period. Twelve children had preexisting chronic systemic comorbidity. Fever was a universal finding; gastrointestinal and respiratory manifestations were noted in 70.9% and 64.3%, respectively, while 57.1% had a skin rash. Fifty-eight percent of children presented with shock, and 22.5% required mechanical ventilation. HSP like rash, gangrene and arthritis were uncommon clinical observations.The median duration of hospital stay was 9 (6.5–18.5) days: four children with preexisting comorbidities succumbed to the illness. The serum ferritin levels (ng/ml) [median (IQR)] were significantly higher in non-survivors as compared to survivors [1061 (581, 2750) vs 309.5 (140, 720.08), p value = 0.045]. Six patients had coronary artery involvement; five recovered during follow-up, while one was still admitted. Twenty-six children received immunomodulatory drugs, and five improved without immunomodulation. The choice of immunomodulation (steroids or intravenous immunoglobulin) did not affect the outcome. Most children with MIS-C present with acute hemodynamic and respiratory symptoms.The outcome is favorable in children without preexisting comorbidities.Raised ferritin level may be a poor prognostic marker. The coronary outcomes at follow-up were reassuring. [ABSTRACT FROM AUTHOR]

Objective: The aim of the present study was to evaluate polymorphisms of fat mass and obesity (FTO; rs9939609) and vitamin D receptor (VDR, FokI (rs2228570), BsmI (rs1544410), ApaI (rs7975232), and TaqI (rs731236)] genes on weight loss after lifestyle interventions in Asian Indians.Methods: In this 6-month pre-post intervention trial, 110 overweight/obese men and women underwent diet and exercise interventions for 180 days resulting in reduction in body weight, (5.1 kg, p < 0.001), waist circumference, and skinfolds.Results: Association of the following genotypes was seen in those with ≥5% weight loss: TT of FTO polymorphism; 35 (81.4%) [OR (95% CI) AT, 2.5 (0.6, 10.9); TT, 6.9 (1.6, 28.2); with reference to AA], tt of VDR TaqI polymorphism, 12 (92.3%) [OR (95% CI); tt, 32.2 (2.4, 436.4); TT, 0.5 (0.08, 3.1); all with reference to Tt], bb of VDR BsmI polymorphism; 27 (65.8%) [OR (95% CI) Bb, 0.2 (0.04, 0.9); bb, 10.6 (0.9, 120.3); all with reference to BB] after adjusting for other genotypes. Further, analysis of combined influence of genotypes conferring maximum weight loss showed that the following had high odds of ≥5% weight loss: (1) TT of FTO gene in combination with BB/Bb of VDR BsmI and TT/Tt of VDR TaqI [OR (95% CI) 5.1 (1.5, 17.4)], (2) bb of BsmI and AA/AT of FTO and tt of TaqI [OR (95% CI) 3.2 (0.3, 31.7)], and (3) bb of BsmI plus TT of FTO and tt of TaqI.Conclusions: The above observations suggest a significant and independent role of the genotypes of FTO and VDR in influencing weight loss after lifestyle intervention in Asian Indians. [ABSTRACT FROM AUTHOR]

Key summary points: Aim: To use an index based on blood biomarkers (serum creatinine and cystatin c) to screen sarcopenia in older adults. Findings: Lower value of Biochemical Total Body Muscle mass index (TBMM) (calculated from serum creatinine and cystatin C) was significantly associated with higher risk of sarcopenia. Message: Biochemical Total Body Muscle Mass index based on serum creatinine and cystatin C can be used to screen sarcopenia in older people. Purpose: Considering the clinical impact of sarcopenia, it would be interesting to get a rapid and sensible screening tool. We conducted a cross-sectional study with the motive to use an index based on serum creatinine and cystatin C to screen sarcopenia in older people in outpatient settings. Methods: 100 participants above the age of 65 years were recruited from the outpatient department of Geriatric medicine of a tertiary care hospital in India. Muscle mass, muscle strength and physical performance were measured by DXA scan, hand-held dynamometer and 4 m gait speed, respectively. Sarcopenia was identified using Asian working group of sarcopenia (AWGS) criteria. Serum creatinine and cystatin C were measured for all participants. Serum creatinine/cystatin C ratio and biochemical total body muscle mass index (TBMM) were calculated and its association was checked with sarcopenia. Results: The prevalence of sarcopenia was 53%. Mean serum creatinine/cystatin C ratio was 74.79 ± 24.91. It was not significantly associated with sarcopenia. Mean biochemical TBMM index of participants was 36.40 ± 7.88 (males—38.77 ± 7.72, females—31.22 ± 5.13). The lower value of biochemical TBMM index was significantly associated with an increased risk of sarcopenia (p < 0.01). Cut-off value of 40.9 in males (sensitivity—79.41%; specificity—61.76%) and 32.2 in females (sensitivity—78.95%; specificity—66.67%) was proposed for identification of sarcopenia. Conclusion: Out of the two indices, only low biochemical total body muscle mass index is significantly associated with sarcopenia and a value of less than 40.9 in males and 32.2 in females can be used to screen sarcopenia in older people. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate the long-term course of primary angle-closure ocular hypertension and primary open-angle ocular hypertension and possible risk factors for progression to glaucoma. Methods: A total of 109 eyes of 109 ocular hypertension (OHT) patients with a minimum follow-up period of 5 years having complete ocular/medical records were evaluated. They were classified into primary angle closure or primary open angle based on gonioscopy at baseline. Baseline and review data of Humphrey field analyser, HFA, and Heidelberg retinal tomography, HRT, were recorded. Guided progression analysis (GPA) and univariate Cox regression were used for time to event analysis in identifying progression to glaucoma. Results: Over a mean follow-up of 12.18 ± 4.8 years, progression to glaucoma was 17.43% (19 eyes), out of whom 5.5% (6 eyes) showed ≥ 3 loci on GPA. Sub-classifying them, progression to primary angle-closure glaucoma was 19.72%, and that of primary open-angle glaucoma was 13.16%. The mean time to progression was 9.34 ± 3.6 years. Significant risk factors included small disc area (≤ 1.99 sq.mm on HRT), requirement of ≥ 2 drugs to maintain target IOP and those engaged in activities yielding a Valsalva effect in daily life. Coronary artery disease (CAD) and systemic use of steroids were associated with increased severity. Conclusion: Overall progression of OHT to glaucoma was 17.43% over a mean of 9 years, with target IOP of ≤ 18 mm Hg. Patients with smaller discs, CAD, exercising Valsalva type activities and using ≥ 2 glaucoma medications or systemic steroids should be closely monitored. [ABSTRACT FROM AUTHOR]

Purpose: There is a theoretical risk of injury to neurovascular structures during inside-out meniscal repair without a safety incision, although there are limited studies assessing this risk. This simulation study on archival MRI films was performed to assess the risk for the popliteal neurovascular bundle and the peroneal nerve during passage of needles for inside-out meniscus repair without a "safety incision", thereby defining a "safe zone" of the menisci that can be safely repaired using this technique.Methods: Archival MRI scans (n = 50) were retrieved and axial sections through the menisci were used for simulation. The needle passage was simulated for different points on the posterior horn and body of lateral and medial menisci at "half-hour" intervals using clock method (15° intervals) with three different portals and two different needle cannulas, resulting in six different scenarios of needle passage for each point on the meniscus. The distance of the needle in each scenario was measured from popliteal vessels (n = 50) and peroneal nerve (n = 10). The value "mean-3SD" was calculated for positive means and "Mean + 3SD" was calculated if the mean was negative. An additional 2 mm was defined as "safe distance". Thus, simulation models in which the mean - 3SD was less than 2 mm (or mean + 3SD was greater than - 2 mm for negative means) were labelled as "unsafe".Results: Needle passage through medial meniscus at and medial to 1 o'clock position for a right knee (or 11 o'clock position for a left knee) was safe, irrespective of the portal and needle type. For the lateral meniscus, only the equatorial region was found to be safe with this method.Conclusions: The popliteal neurovascular bundle is safe during the inside-out medial meniscal repair without a safety incision. For the terminal-most part of the posterior horn, the AM portal and the straight cannula should be avoided. However, this method without safety incision cannot be recommended for lateral meniscus because of the risk to the popliteal vessels and the peroneal nerve. Instead, the inside-out method with a safety incision, or an all-inside method should be used for lateral meniscus.Level Of Evidence: III. [ABSTRACT FROM AUTHOR]

Introduction: Maximal safe surgical resection followed by adjuvant chemoradiation has been standard for newly diagnosed glioblastoma multiforme (GBM). Hypofractionated accelerated radiotherapy (HART) has the potential to improve outcome as it reduces the overall treatment time and increases the biological effective dose.Methods: Between October 2011 and July 2017, a total of 89 newly diagnosed GBM patients were randomized to conventional fractionated radiotherapy (CRT) or HART. Radiotherapy was delivered in all patients with a three-dimensional conformal radiotherapy technique in CRT arm (60 Gy in 30 fractions over 6 weeks @ 2 Gy/per fraction) or simultaneous integrated boost intensity modulated radiotherapy in HART arm (60 Gy in 20 fractions over 4 weeks @ 3 Gy/per fraction to high-risk planning target volume (PTV) and 50 Gy in 20 fractions over 4 weeks @ 2.5 Gy/per fraction to low-risk PTV). The primary endpoint of the trial was overall survival (OS).Results: After a median follow-up of 11.4 months (Range: 2.9-42.5 months), 26 patients died and 39 patients had progression of the disease. Median OS for the entire cohort was 23.4 months. Median OS in the CRT and HART arms were 18.07 months (95% CI 14.52-NR) and 25.18 months (95% CI 12.89-NR) respectively, p = 0.3. Median progression free survival (PFS) for the entire cohort was 13.5 months (Range: 11.7-15.7 months). In multivariate analysis patients younger than 40 years of age, patients with a gross total resection of tumor and a mutated IDH-1 had significantly better OS. PFS was significantly better for patients with a gross total resection of tumor and a mutated IDH-1. All patients included in the trial completed the planned course of radiation. Only two patients required hospital admission for features of raised intracranial tension. One patient in the HART arm required treatment interruption.Conclusion: HART is comparable to CRT in terms of survival outcome. HART arm had no excess treatment interruption and minimal toxicity. Dose escalation, reduction in overall treatment time, is the advantages with use of HART. [ABSTRACT FROM AUTHOR]

Background Endothelial dysfunction is the initial step for atherogenesis. Children with idiopathic nephrotic syndrome are at risk of endothelial dysfunction due to altered cholesterol metabolism which can lead to early atherosclerosis. Methods In this analytical study with longitudinal follow up 25 children with first episode of nephrotic syndrome (FENS) aged 1–16 years along with 25 age and gender matched healthy controls were enrolled. Endothelin 1 (ET 1) levels were measured by ELISA (Cloud Clone Corp. and assembled by USCN Inc, U.S.A). Other variables were measured using standard biochemical methods. Primary outcome measure was plasma ET 1 level in children with FENS and in controls. Secondary outcome measure was to observe the levels of ET 1 in children with FENS at 12 weeks in remission. Results The level of ET 1 was significantly higher (p < 0.001) in children with FENS as compared to controls. The level of ET 1 was significantly higher (p = 0.006) in SSNS at the onset of nephrotic syndrome and was significantly lower (p = 0.04) after 12 weeks of drug induced remission as compared to controls. SRNS children had higher levels of ET 1 than the steroid sensitive patients at onset but in was not statistically significant (p = 0.062). ET 1 showed significant positive correlation with total cholesterol (r = 0.462; p = 0.001) and negative correlation with serum albumin (r = −0.565; p = 0.001). Conclusion Plasma ET 1 levels are raised in children with FENS posing a risk of endothelial dysfunction, which persists at least in short term. Long term effects of raised plasma ET 1 needs to be studied. [ABSTRACT FROM AUTHOR]

This study aims to establish a simplified molecular classification of glioblastomas (GBMs) based on molecular genetic alterations. GBM cases (n-114) were evaluated for IDH-1 and TP53 mutation by Sanger sequencing, PDGFRA and EGFR amplification by FISH, NF1 and YKL40 expression by qRT-PCR. Subsequently they were classified into four subgroups: classical like (CL), proneural like (PN), mesenchymal like (MES) and neural like (NEU). CL subtype was most frequent (39 %), followed by PN (32 %) and MES (20 %) subtypes. PN subtype had significantly younger age at presentation and longest survival (median PFS--82.5 weeks; 1 and 2 years OS--90.6 and 71.3 %). Other three subgroups had equally poor prognosis and hence, clubbed together as nonproneural (Non-PN) (median PFS--39 weeks; 1 and 2 years OS--66 and 0 %). Hence, we recommended this relatively easy method of subclassifying GBMs into PN and Non-PN which are statistically different in prognosis (both OS and PFS on uni and multivariate analysis). Although evaluation of six molecular alterations for identifying these two subgroups is still cumbersome, we propose segregation of PN subtype alone based on assessment of IDH1, TP53 and PDGFRA status, which is relatively easy and may be amenable to routine practice. [ABSTRACT FROM AUTHOR]

An amendment to this paper has been published and can be accessed via a link at the top of the paper. [ABSTRACT FROM AUTHOR]