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INTRODUCTION: Surgical experience and tumor characteristics are extremely important in laparocopic partial nephrectomy surgery (LPN). Most of the studies examining the relation of R.E.N.A.L.nephrometry score to surgical success have examined the results of experienced surgeons. In this study, we investigated the effectiveness of R.E.N.A.L. nephrometry score (RNS) in predicting complications and success for urologists who are at the beginning of the learning curve for laparoscopic partial nephrectomy. METHODS: The first 30 cases of LPN performed by a single surgeon were evaluated, retrospectively. The patients were grouped according to the RNS as low-risk and medium-high risk. Operation time, warm ischemia time and were recorded. Postoperative blood transfusion rate, hospital stay, hemogram levels and pathology results (surgical margin and tumor type) were evaluated. The comparison of perioperative values of the two groups was done by Mann-Whitney U test. RESULTS: There was no statistically significant difference between operation time, warm ischemia time, hospital stay time, and intra-operative bleeding amount (p> 0.05) between the low risk group and medium-high risk group patients. The total complication rate was 33.3%. The compliction rate for the low risk group was 27% (n = 5) (major complication 5.5% (n = 1)) and 41.6% (n = 5) for the medium-high group (major complication 8.3% (n = 1)). In comparing the two groups for complications, no significant difference was found (p = 0.46). DISCUSSION AND CONCLUSION: The R.E.N.A.L.nephrometry score does not affect the success and complication rates of urologists at the beginning of the learning curve in LPN surgery.