Background Chronic kidney disease (CKD) is an important cause of morbidity and mortality worldwide. There is lack of information on epidemiology and progression of CKD in low-middle income countries. The Indian Chronic Kidney Disease (ICKD) study aims to identify factors that associate with CKD progression, and development of kidney failure and cardiovascular disease (CVD) in Indian CKD patients . Methods ICKD study is prospective, multicentric, cohort study enrolling patients with estimated glomerular filtration rate (eGFR) 15-60 ml/min/1.73m2 or > 60 ml/min/1.73m2 with proteinuria. Clinical details and biological samples are collected at annual visit. We analysed the baseline characteristics including socio-demographic details, risk factors, disease characteristics and laboratory measurements. In addition, we compared characteristics between urban and rural participants. Results A total of 4056 patients have been enrolled till March 31, 2020. The age was 50.3 ±11.8 years, 67.2% were males, 2/3 lived in rural areas and median eGFR was 40 ml/min/1.73m2. About 87% were hypertensive, 37% had diabetes, 22% had CVD, 6.7% had past history of acute kidney injury and 23% reported prior use of alternative drugs. Diabetic kidney disease, chronic interstitial nephritis and CKD-cause unknown were the leading causes. Rural participants had more occupational exposure and tobacco use but lower educational status and income. CIN and unknown categories were leading causes in rural participants. Conclusions The ICKD study is the only large cohort study of patients with mild-to-moderate CKD in a lower-middle income country. Baseline characteristics of study population reveal differences as compared to other cohorts.

<b><i>Introduction:</i></b> Renal dysfunction at presentation is uncommon in primary membranous nephropathy (PMN). The data on the outcome of PMN patients with renal dysfunction at outset are scarce. The objective of the current study was to report the clinical outcomes of PMN patients with renal dysfunction. <b><i>Material and Methods:</i></b> This prospective longitudinal observational study included PMN patients (both incident and treatment resistant) with an estimated glomerular filtration rate of &#x3c;60 mL/min/1.73 m². Immunosuppressive treatment was as per the unit’s protocol. Patients were evaluated for proteinuria, creatinine, and serum albumin at monthly intervals for 6 months, then quarterly for a year, and then biannually. Both serum and tissue anti-PLA2R were performed at baseline. Outcome: Percentage of patients achieving clinical remission. <b><i>Results:</i></b> Sixty-four adults met study criteria and were analysed. The median (IQR) age of the patients was 48 (40, 56) years. PMN was PLA2R related in 52 (81.3%) patients. Twenty-eight (43.8%) and 30 (46.9%) patients were in remission at 12 months and at the end of the study [median (IQR) follow up: 24 months (12, 35)], respectively. Eight (12.5%) had progressed to end-stage renal disease at the last follow-up. Median (IQR) baseline anti-PLA2R titre was 150.1 RU/mL (38.5, 308). Nineteen (61.3%) and 18 (58.1%) patients with &#x3e;90% reduction in anti-PLA2R titres at 12 months were in clinical remission at 12 months and at the end of the follow-up, respectively. Both cyclical cyclophosphamide/steroids (cCYC/GC) and rituximab were equally effective in inducing remission, but rituximab had a favourable adverse event profile compared to cCYC/GC. <b><i>Conclusion:</i></b> To conclude, both cCYC/GC and rituximab are equally effective in inducing remission of nephrotic state with compromised renal function due to PMN. Immunosuppression induces remission in up to 50% PMN patients with CKD-stage 3–4.

Introduction Pregnancy-related acute kidney injury is the most common cause of renal cortical necrosis (RCN). Atypical hemolytic uremic syndrome (aHUS) as a cause of RCN in pregnant/postpartum is underevaluated. In the current article, we describe a series of cases of pregnancy-related RCN. Methods All cases with acute kidney injury (AKI) in the setting of pregnancy and postpartum state were included. Diagnosis of RCN was made by contrast-enhanced computerized tomography (nonenhancing renal cortex, enhancing medulla, and no excretion of contrast medium) or on a renal biopsy. aHUS was diagnosed in the presence of microangiopathic hemolytic anemia (thrombocytopenia, elevated lactate dehydrogenase with schistocytes on peripheral smear examination, or low haptoglobin). Results A total of 21 (17.5%) patients presented with RCN during pregnancy, all in the postpartum state. Twenty patients (95.2%) showed microangiopathic hemolytic anemia consistent with HUS and 1 (4.8%) patient had biopsy-proven thrombotic microangiopathy. Low complement 3 or activation of an alternate complement pathway was seen in 9 of 15 patients in which it was done. At the end of 6 months, only 2 (9.5%) patients had partial recovery of renal functions, 5 (23.8%) patients died, and 14 remained (66.7%) on hemodialysis. Conclusion The clinical and laboratory features are highly suggestive of aHUS in more than three-fourths of cases with postpartum RCN. Investigations are needed to look for genetic abnormalities in the complement pathway.

Introduction: Contrast-induced nephropathy (CIN) / Contrast inducedacute kidney injury (CI-AKI) is one of the most common causes of hospital-acquired AKI. Methods: This is a prospective, single center study of 774 consecutive patients (449 males and 325 females with mean age of 48.85 AE 14.05 years) who underwent iodinated contrast procedures with nonionic, low-osmolality iodinated contrast medium (Iomeprol) via IV and IA routes from 2013 to 2015 were included in the study. CIN was defined as a relative increase of $25% or an absolute increase of >0.5 mg/dL in serum creatinine levels within 2 days post-procedure. We recorded the baseline characteristics, laboratory parameters along with underlying renal injury risk factors; contrast administration volume, type, and route of administration; incidence of CIN and requirement of dialysis and use of prophylactic measures for CIN. Univariate and multivariate models were used to determine predictors of CIN. Results: The total incidence of CIN was 14.85% (115 patients) with the incidence being 77.4% following IA contrast administration versus 22.6% following IV contrast administration (p ¼ 0.001). Baseline eGFR was lower for patients undergoing IA contrast procedures (66.02 AE 23.70 ml/min/1.73m 2 vs 71.31AE24.07 ml/min/1.73m 2 , p¼0.002). The total risk of renal replacement therapy was 1.7% (13 patients) with the incidence being more in the IA group than the IV group (3.1% vs

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