Niraparib-induced pure red cell aplasia.

INTRODUCTION: Niraparib, a strong poly(adenosine diphosphate-ribose) polymerase (PARP) inhibitor, contributed significantly to progression-free survival as a maintenance therapy in the platinum-sensitive period in both first-line and recurrent ovarian cancer, regardless of the BRCA mutation. Grade 3-4 anemia, which has a manageable side effect profile, especially hematological, is seen in almost 1 out of every 4 patients. To the best of our knowledge, there has been no reported case of pure red cell aplasia (PRCA) induced by niraparib treatment. CASE REPORT: A 65-year-old woman diagnosed with stage 3 serous carcinoma of the tuba received niraparib front-line maintenance treatment had grade 4 anemia after 3 months of niraparib treatment. She underwent bone marrow aspiration and biopsy because of refractory anemia, which needs red blood cell (RBC) transfusions despite interruption of treatment. MANAGEMENT AND OUTCOME: The patient was treated with 1 mg/kg methyl prednisolone, after histopathological assessment was consistent with PRCA. The hemoglobin count returned to the normal range with steroid treatment. DISCUSSION: In daily practice, it should be kept in mind that in the case of refractory anemia induced by niraparib, the underlying cause might be PRCA and can be improved with steroid administration.

Effects of Sarcopenia, Myosteatosis, and the Prognostic Nutritional Index on Survival in Stage 2 and 3 Gastric Cancer Patients.

BACKGROUND: We aimed to evaluate the relationship between sarcopenia, myosteatosis, and systemic inflammatory response biomarkers and their prognostic role in stage 2 and 3 gastric cancer patients. METHODS: This study included 84 patients with stage 2 or 3 gastric cancer who underwent a gastrectomy. Computed tomography scans were used to determine the skeletal muscle index (SMI) at the third lumbar vertebra level for sarcopenia and myosteatosis. RESULTS: Based on the Asian Working Group of Sarcopenia (AWGS2019) criteria, the sarcopenia incidence was 36.9% and that of myosteatosis 46.4%. Univariate analysis showed that sarcopenia (48 vs. 14 mo, p < 0.001), myosteatosis (45 vs. 16 mo, p = 0.016), a low prognostic nutritional index (60 vs. 15 mo, p = 0.003), stage 3 (104 vs. 21 mo, p = 0.013), and old age (45 vs. 16 mo, p = 0.015) were poor prognostic markers. Multivariate analysis revealed that sarcopenia (AWGS2019), age, and stage significantly affected overall survival (hazard ratio: 3.31, 95% CI: 1.85-5.1; 1.96, 95% CI: 1.06-6.63; 2.5, 95% CI: 1.2-5.1, respectively). CONCLUSION: We showed that sarcopenia directly affects overall gastric cancer survival.

Nivolumab-ipilimumab combination therapy-induced seronegative encephalitis; rapid response to steroid plus intravenous immunoglobulin (IVIG) treatment.

INTRODUCTION: The efficacy of immune checkpoint inhibitors (ICIs) against malignant melanoma and numerously solid tumors has been demonstrated in several clinical studies. The incidence of immune-related adverse effects (irAEs) has increased after the rapidly expanding indications and clinical applications of ICIs. We present a case of nivolumab and ipilimumab-induced encephalitis with rapidly worsening consciousness and full recovery following ICIs suspension and high-dose steroid coupled with intravenous immunoglobulin (IVIG). CASE REPORT: A 67-year-old woman was diagnosed with stage 4 BRAF wild malignant melanoma with metastasis to the axillary and mediastinal lymph nodes. Beyond progression with dacarbazine, ipilimumab and nivolumab combination were administered at the second-line treatment of metastatic setting. A week after the first cycle patient was reported to have a fever of more than 38°C. Subacute cognitive impairment including mild changes in behavior was reported on the third day of fever. She suddenly developed confusion, dysarthria, and motor dysfunction a few days later. Due to the altered mental status accompanied by fever, lumbar puncture was performed with a pre-diagnosis of encephalitis, meningitis, and leptomeningeal carcinomatosis. MANAGEMENT & OUTCOME: After excluding viral and autoimmune encephalitis, high-dose methylprednisolone was administered in addition to IVIG for 5 days with the diagnosis of immunotherapy-related encephalitis according to the recommendations for the management of irAEs. On the second day of the treatment patient's neurological status improved gradually. DISCUSSION: Being aware of symptoms of serious neurological irAEs associated with ICIs can prevent complications and improve survival.

The relationship between prognostic nutritional index and treatment response in patients with metastatic renal cell cancer.

INTRODUCTION AND AIM: To investigate the effect of the prognostic nutritional index on treatment response and survival in patients with metastatic renal cell cancer. METHODS: We retrospectively analyzed the treatment modalities; the demographic, clinical and pathological features of 396 patients with RCC and prognostic nutritional index. Based on the median value, patients were grouped as having low and high prognostic nutritional index values. Kaplan-Meier method was used for survival analysis, and Cox-regression analysis was used for multivariate analysis. RESULTS: The median overall survival was 39 months (95% CI 26.1-51.8), 28 months (95% CI 17.9-38) and 7 months (95% CI 4.7-9.2) in patients with favorable, intermediate and poor International Metastatic Renal Cell Carcinoma Database Consortium risk group, respectively. The difference between the groups was statistically significant (p < 0001). Overall survival was 11 months (95% CI 7.5-14.5) in the low-prognostic nutritional index (prognostic nutritional index ≤38.5) group, and 41 months (95% CI 30.5-51.4) in the high prognostic nutritional index (prognostic nutritional index >38.5) group (p < 0.001). In Cox regression analysis, Eastern Cooperative Oncology Group performance score (HR: 2.5), time to systemic treatment (HR: 1.7) and prognostic nutritional index (HR: 1.8) were associated with overall survival. CONCLUSION: In patients with renal cell cancer, prognostic nutritional index is closely related to survival and has prognostic significance.

Neutrophil-lymphocyte ratio as a prognostic factor for survival in patients with advanced renal cell carcinoma (Turkish Oncology Group Study).

BACKGROUND: To describe the prognostic value of neutrophil-lymphocyte ratio and its effect on survival in in patients with advanced renal cell carcinoma. METHODS: We retrospectively analyzed 331 patients. The cut-off value of neutrophil-lymphocyte ratio was specified as "3" which is mostly close-and also clinically easily applicable-to the median neutrophil-lymphocyte ratio level of our study group. High group is identified as neutrophil-lymphocyte ratio >3 (n = 160) and low group is identified as neutrophil-lymphocyte ratio ≤3 (n = 163). RESULTS: A total of 331 (with 211 male and 120 female) patients were enrolled to study. The median age of the patients was 58. The International Metastatic RCC Database Consortium risk score is calculated for the 72.8% (n = 241) of the study group and among these patients, favorable, intermediate, and poor risk rates were 22, 45.2, and 32.8%. The total usage of tyrosine kinase inhibitors reached 78% of the patients. The median overall survival was 32 months versus 11 months in the neutrophil-lymphocyte ratio low and high groups, respectively (HR: 0.49 (95% CI 0.37-0.65), p < 0.001). CONCLUSION: In conclusion, the pre-treatment value of elevated neutrophil-lymphocyte ratio might be a predictor of poor overall survival in advanced renal cell carcinoma patients.

Oxaliplatin­induced changes in splenic volume and liver fibrosis indices: retrospective analyses of colon cancer patients receiving adjuvant chemotherapy.

The aim of our study was to evaluate the association between increased splenic volume (SV) and liver fibrosis indices in colon cancer patients receiving oxaliplatin-based adjuvant chemotherapy. Patients who received adjuvant oxaliplatin-based regimens with the diagnosis of stage II and III colon cancer were evaluated. Splenic volume measurements, liver function tests, platelet count, and non-invasive liver fibrosis indices [NAFLD fibrosis score (NFS), AST to platelet ratio (APRI), and Fibrosis-4 (FIB-4)] were measured before and after treatment. A 30% increase in SV after chemotherapy compared to baseline was considered increased SV. The rate of increase in SV was 57.7% in the whole group. An increase in SV was shown at a higher rate in patients treated with capecitabine and oxaliplatin (CAPOX) than those treated with 5-fluorouracil, leucovorin, and oxaliplatin (FOLFOX) (66.3% vs. 36.8%, p = 0.002). Furthermore, the CAPOX regimen (OR: 2.831, 95% CI: 1.125-7.121; p = 0.027), and higher post-treatment FIB-4 score (OR: 3.779; 95% CI:1.537- 9.294, p = 0.004) were determined as independent risk factors for the increased SV. Our study revealed that increased SV had a significant association with higher FIB-4 score in patients treated with oxaliplatin-based chemotherapy.

Comparison of the second-line treatment efficacy in advanced gastric cancer patients previously treated with taxane-based triplet chemotherapy: a Turkish Oncology Group Study.

OBJECTIVE: This study aimed to assess the efficacy and safety of FOLFIRI and paclitaxel in patients with advanced gastric cancer (AGC) who were previously treated with first-line modified docetaxel, cisplatin, 5-fluorouracil (mDCF), or 5-fluorouracil, oxaliplatin, docetaxel (FLOT). METHODS: Patients who received a triplet regimen in the first line setting and were treated with FOLFIRI or paclitaxel in the second-line treatment were included. RESULTS: The study included 198 patients, with 115 receiving FOLFIRI and 83 receiving paclitaxel. The median age was 58 (range = 24-69). The median progression-free survival (mPFS) was 5.2 [95% confidence interval (CI) = 4.4-5.5] months in the FOLFIRI arm, and 4.1 (95% CI = 3.3-4.6) months in the paclitaxel arm (p = .007). The median overall survival (mOS) was 9.4 (95% CI = 7.4-10.5) months in the FOLFIRI arm and 7.2 (95% CI = 5.6-8.3) months in the paclitaxel arm (p = .008). Grade 3-4 neuropathy was higher in patients receiving paclitaxel compared to those receiving FOLFIRI (p = .04). Grade 3-4 diarrhea was 8% in the FOLFIRI arm and 2.4% in the paclitaxel arm (p = .02). CONCLUSION: Beyond progression with docetaxel-based triplet chemotherapy, FOLFIRI may be preferred as a second-line treatment over paclitaxel due to its longer mPFS and mOS.

Real-world data on the efficacy and safety of trastuzumab emtansine in patients with metastatic breast cancer previously treated with pertuzumab: Turkish oncology group multicenter study.

We aimed to evaluate the efficacy and safety of trastuzumab emtansine in patients with metastatic breast cancer previously treated with pertuzumab plus trastuzumab and taxane. We reviewed the medical records of patients who were diagnosed with Human Epidermal Growth Factor Receptor 2 (HER-2) positive metastatic breast cancer and received pertuzumab and then TDM-1 between January 2014 and January 2021 from twenty- five cancer centers. The Kaplan- Meier method estimated progression-free survival (PFS) and overall survival (OS). Additionally, objective response rate (ORR), clinical benefit rate (CBR), and safety were evaluated. One hundred fifty-three patients were included,79.1% of the patients received TDM-1 in the second line, 90.8% had visceral metastasis, and 30.7% had central nervous system involvement. The PFS and OS of TDM-1 were evaluated according to the number of previous lines (on the 2nd line or more than two lines) metastatic sites (visceral and non-visceral) and the presence of central nervous metastasis. In TDM-1 therapy, PFS in second line therapy was ten months (95% CI: 7.7 - 12.2); this was statistically higher than later-line PFS, which was six months (95% CI: 3.3 to 8.6) (p = 0.004). The median OS time was 25 months (95% CI: 21.0 to 28.9) in patients treated with TDM-1 in the second line and 19 months (95% CI: 12.3 to 25.6) in patients who received later than the second line(p = 0.175). There were no significant differences in PFS time of patients with and without visceral and central nervous metastases. Our study showed that TDM-1 was also effective in patients using pertuzumab, contributes significantly to PFS when used in the second line compared to its use in the later line, and does not make any difference in OS.