Phase II Trial of Cisplatin, Gemcitabine, and Intensity-Modulated Radiation Therapy for Locally Advanced Vulvar Squamous Cell Carcinoma: NRG Oncology/GOG Study 279.

PURPOSE: To assess efficacy and toxicity of cisplatin (C) and gemcitabine (G) with intensity-modulated radiation therapy (IMRT) in patients with locally advanced vulvar cancer not amenable to surgery. METHODS: Patients enrolled in a single-arm phase II study. Pretreatment inguinal-femoral nodal assessment was performed. Sixty-four Gy IMRT was prescribed to the vulva, with 50-64 Gy delivered to the groins/low pelvis. Radiation therapy (RT) plans were quality-reviewed pretreatment. C 40 mg/m2 and G 50 mg/m2 were administered once per week throughout IMRT. Complete pathologic response (CPR) was the primary end point. Progression-free survival (PFS) and overall survival (OS) were estimated using the Kaplan-Meier method, and adverse events were assessed with Common Terminology Criteria for Adverse Events v 4.0. RESULTS: Fifty-seven patients enrolled, of which 52 were evaluable. The median age was 58 years (range, 25-58), and 94% were White. Forty (77%) had stage II or III disease, and all had squamous histology. A median of six chemotherapy cycles (range, 1-8) were received. Eighty-five percent of RT plans were quality-reviewed with 100% compliance to protocol. Seven patients came off trial because of toxicity or patient withdrawal. Of 52 patients available for pathologic assessment, 38 (73% [90% CI, 61 to 83]) achieved CPR. No pelvic exenterations were performed. With a median follow-up of 51 months, the 12-month PFS was 74% (90% CI, 62.2 to 82.7) and the 24-month OS was 70% (90% CI, 57 to 79). The most common grade 3 or 4 adverse events were hematologic toxicity and radiation dermatitis. There was one grade 5 event unlikely related to treatment. CONCLUSION: Weekly C and G concurrent with IMRT sufficiently improved CPR in women with locally advanced vulvar squamous cell carcinoma not amenable to surgical resection.

Mirvetuximab Soravtansine in FRα-Positive, Platinum-Resistant Ovarian Cancer.

BACKGROUND: Mirvetuximab soravtansine-gynx (MIRV), a first-in-class antibody-drug conjugate targeting folate receptor α (FRα), is approved for the treatment of platinum-resistant ovarian cancer in the United States. METHODS: We conducted a phase 3, global, confirmatory, open-label, randomized, controlled trial to compare the efficacy and safety of MIRV with the investigator's choice of chemotherapy in the treatment of platinum-resistant, high-grade serous ovarian cancer. Participants who had previously received one to three lines of therapy and had high FRα tumor expression (≥75% of cells with ≥2+ staining intensity) were randomly assigned in a 1:1 ratio to receive MIRV (6 mg per kilogram of adjusted ideal body weight every 3 weeks) or chemotherapy (paclitaxel, pegylated liposomal doxorubicin, or topotecan). The primary end point was investigator-assessed progression-free survival; key secondary analytic end points included objective response, overall survival, and participant-reported outcomes. RESULTS: A total of 453 participants underwent randomization; 227 were assigned to the MIRV group and 226 to the chemotherapy group. The median progression-free survival was 5.62 months (95% confidence interval [CI], 4.34 to 5.95) with MIRV and 3.98 months (95% CI, 2.86 to 4.47) with chemotherapy (P<0.001). An objective response occurred in 42.3% of the participants in the MIRV group and in 15.9% of those in the chemotherapy group (odds ratio, 3.81; 95% CI, 2.44 to 5.94; P<0.001). Overall survival was significantly longer with MIRV than with chemotherapy (median, 16.46 months vs. 12.75 months; hazard ratio for death, 0.67; 95% CI, 0.50 to 0.89; P = 0.005). During the treatment period, fewer adverse events of grade 3 or higher occurred with MIRV than with chemotherapy (41.7% vs. 54.1%), as did serious adverse events of any grade (23.9% vs. 32.9%) and events leading to discontinuation (9.2% vs. 15.9%). CONCLUSIONS: Among participants with platinum-resistant, FRα-positive ovarian cancer, treatment with MIRV showed a significant benefit over chemotherapy with respect to progression-free and overall survival and objective response. (Funded by ImmunoGen; MIRASOL ClinicalTrials.gov number, NCT04209855.).

Overall survival and patient-reported outcome results from the placebo-controlled randomized phase III IMagyn050/GOG 3015/ENGOT-OV39 trial of atezolizumab for newly diagnosed stage III/IV ovarian cancer.

OBJECTIVE: To determine the impact on overall survival (OS) and patient-reported outcomes (PROs) of combining atezolizumab with standard therapy for newly diagnosed stage III/IV ovarian cancer. METHODS: The placebo-controlled double-blind randomized phase III IMagyn050/GOG 3015/ENGOT-OV39 trial (NCT03038100) assigned eligible patients to 3-weekly atezolizumab 1200 mg or placebo for 22 cycles with platinum-based chemotherapy and bevacizumab. Coprimary endpoints were progression-free survival (already reported) and OS in the PD-L1-positive and intent-to-treat (ITT) populations, tested hierarchically. Prespecified PRO analyses focused on disease-related abdominal pain and bloating symptoms (European Organisation for Research and Treatment of Cancer QLQ-OV28), functioning, and health-related quality of life (HRQoL) (QLQ-C30). RESULTS: After 38 months' median follow-up, the OS hazard ratio in the PD-L1-positive population was 0.83 (95% CI, 0.66-1.06; p = 0.13); median OS was not estimable with atezolizumab versus 49.2 months with placebo. The hazard ratio for OS in the ITT population was 0.92 (95% CI, 0.78-1.09; median 50.5 versus 46.6 months, respectively). At week 9, similar proportions of patients in both arms of the neoadjuvant cohort showed ≥10-point improvement from baseline in abdominal pain and bloating, functioning, and HRQoL. In the primary surgery cohort, similar proportions of patients in each arm had improved, stable, or worsened physical and role function and HRQoL from baseline over time. Neither cohort showed differences between arms in treatment-related symptoms or overall side-effect bother. CONCLUSIONS: Incorporation of atezolizumab into standard therapy for newly diagnosed ovarian cancer does not significantly improve efficacy or impose additional treatment burden for patients. CLINICALTRIALS: gov registration: NCT03038100.

Influence of Genomic Landscape on Cancer Immunotherapy for Newly Diagnosed Ovarian Cancer: Biomarker Analyses from the IMagyn050 Randomized Clinical Trial.

PURPOSE: To explore whether patients with BRCA1/2-mutated or homologous recombination deficient (HRD) ovarian cancers benefitted from atezolizumab in the phase III IMagyn050 (NCT03038100) trial. PATIENTS AND METHODS: Patients with newly diagnosed ovarian cancer were randomized to either atezolizumab or placebo with standard chemotherapy and bevacizumab. Programmed death-ligand 1 (PD-L1) status of tumor-infiltrating immune cells (IC) was determined centrally (VENTANA SP142 assay). Genomic alterations, including deleterious BRCA1/2 alterations, genomic loss of heterozygosity (gLOH), tumor mutation burden (TMB), and microsatellite instability (MSI), were evaluated using the FoundationOne assay. HRD was defined as gLOH ≥ 16%, regardless of BRCA1/2 mutation status. Potential associations between progression-free survival (PFS) and genomic biomarkers were evaluated using standard correlation analyses and log-rank of Kaplan-Meier estimates. RESULTS: Among biomarker-evaluable samples, 22% (234/1,050) harbored BRCA1/2 mutations and 46% (446/980) were HRD. Median TMB was low irrespective of BRCA1/2 or HRD. Only 3% (29/1,024) had TMB ≥10 mut/Mb, and 0.3% (3/1,022) were MSI-high. PFS was better in BRCA2-mutated versus BRCA2-non-mutated tumors and in HRD versus proficient tumors. PD-L1 positivity (≥1% expression on ICs) was associated with HRD but not BRCA1/2 mutations. PFS was not improved by adding atezolizumab in BRCA2-mutated or HRD tumors; there was a trend toward enhanced PFS with atezolizumab in BRCA1-mutated tumors. CONCLUSIONS: Most ovarian tumors have low TMB despite BRCA1/2 mutations or HRD. Neither BRCA1/2 mutation nor HRD predicted enhanced benefit from atezolizumab. This is the first randomized double-blind trial in ovarian cancer demonstrating that genomic instability triggered by BRCA1/2 mutation or HRD is not associated with improved sensitivity to immune checkpoint inhibitors. See related commentary by Al-Rawi et al., p. 1645.

Atezolizumab, Bevacizumab, and Chemotherapy for Newly Diagnosed Stage III or IV Ovarian Cancer: Placebo-Controlled Randomized Phase III Trial (IMagyn050/GOG 3015/ENGOT-OV39).

PURPOSE: To evaluate the addition of the humanized monoclonal antiprogrammed death ligand-1 (PD-L1) antibody, atezolizumab, to platinum-based chemotherapy and bevacizumab in newly diagnosed stage III or IV ovarian cancer (OC). METHODS: This multicenter placebo-controlled double-blind randomized phase III trial (ClinicalTrials.gov identifier: NCT03038100) enrolled patients with newly diagnosed untreated International Federation of Gynecology and Obstetrics (FIGO) stage III or IV OC who either had undergone primary cytoreductive surgery with macroscopic residual disease or were planned to receive neoadjuvant chemotherapy and interval surgery. Patients were stratified by FIGO stage, Eastern Cooperative Oncology Group performance status, tumor immune cell PD-L1 staining, and treatment strategy and randomly assigned 1:1 to receive 3-weekly cycles of atezolizumab 1,200 mg or placebo (day 1, cycles 1-22), with paclitaxel plus carboplatin (day 1, cycles 1-6) plus bevacizumab 15 mg/kg (day 1, cycles 2-22), omitting perioperative bevacizumab in neoadjuvant patients. The co-primary end points were investigator-assessed progression-free survival and overall survival in the intention-to-treat and PD-L1-positive populations. RESULTS: Between March 8, 2017, and March 26, 2019, 1,301 patients were enrolled. The median progression-free survival was 19.5 versus 18.4 months with atezolizumab versus placebo, respectively (hazard ratio, 0.92; 95% CI, 0.79 to 1.07; stratified log-rank P = .28), in the intention-to-treat population and 20.8 versus 18.5 months, respectively (hazard ratio, 0.80; 95% CI, 0.65 to 0.99; P = .038), in the PD-L1-positive population. The interim (immature) overall survival results showed no significant benefit from atezolizumab. The most common grade 3 or 4 adverse events were neutropenia (21% with atezolizumab v 21% with placebo), hypertension (18% v 20%, respectively), and anemia (12% v 12%). CONCLUSION: Current evidence does not support the use of immune checkpoint inhibitors in newly diagnosed OC. Insight from this trial should inform further evaluation of immunotherapy in OC.

Randomized Trial of Intravenous Versus Intraperitoneal Chemotherapy Plus Bevacizumab in Advanced Ovarian Carcinoma: An NRG Oncology/Gynecologic Oncology Group Study.

PURPOSE: To evaluate the impact of two different intraperitoneal (IP) chemotherapy regimens on progression-free survival (PFS) among women with newly diagnosed advanced ovarian carcinoma. METHODS: Eligible patients were randomly assigned to six cycles of IV paclitaxel 80 mg/m2 once per week with intravenous (IV) carboplatin area under the curve 6 (IV carboplatin) versus IV paclitaxel 80 mg/m2 once per week with IP carboplatin area under the curve 6 (IP carboplatin) versus once every 3 weeks IV paclitaxel 135 mg/m2 over 3 hours day 1, IP cisplatin 75 mg/m2 day 2, and IP paclitaxel 60 mg/m2 day 8 (IP cisplatin). All participants received bevacizumab 15 mg/kg IV every 3 weeks in cycles 2 to 22. RESULTS: A total of 1,560 participants were enrolled and had 84.8 months of follow-up. The median PFS duration was 24.9 months in the IV carboplatin arm, 27.4 months in the IP carboplatin arm, and 26.2 months in the IP cisplatin arm. For the subgroup of 1,380 patients with stage II/III and residual disease of 1 cm or less, median PFS was 26.9 (IV-carboplatin), 28.7 (IP-carboplatin), and 27.8 months (IP cisplatin), respectively. Median PFS for patients with stage II/III and no residual disease was 35.9, 38.8, and 35.5 months, respectively. Median overall survival for all enrolled was 75.5, 78.9, and 72.9 months, respectively, and median overall survival for stage II/III with no gross residual disease was 98.8 months, 104.8 months, and not reached. Mean patient-reported Functional Assessment of Cancer Therapy neurotoxicity scores (Gynecologic Oncology Group) were similar for all arms, but the mean Trial Outcome Index of the Functional Assessment of Cancer Therapy-Ovary scores during chemotherapy were statistically worse in the IP cisplatin arm. CONCLUSION: Compared with the IV carboplatin reference arm, the duration of PFS was not significantly increased with either IP regimen when combined with bevacizumab and was better tolerated than IP cisplatin.

Patient and physician factors associated with participation in cervical and uterine cancer trials: an NRG/GOG247 study.

PURPOSE: The aim of this study was to identify patient and physician factors related to enrollment onto Gynecologic Oncology Group (GOG) trials. METHODS: Prospective study of women with primary or recurrent cancer of the uterus or cervix treated at a GOG institution from July 2010 to January 2012. Logistic regression examined probability of availability, eligibility and enrollment in a GOG trial. Odds ratios (OR) and 95% confidence intervals (CI) for significant (p<0.05) results reported. RESULTS: Sixty institutions, 781 patients, and 150 physicians participated, 300/780 (38%) had a trial available, 290/300 had known participation status. Of these, 150 women enrolled (59.5%), 102 eligible did not enroll (35%), 38 (13%) were ineligible. Ethnicity and specialty of physician, practice type, data management availability, and patient age were significantly associated with trial availability. Patients with >4 comorbidities (OR 4.5; CI 1.7-11.8) had higher odds of trial ineligibility. Non-White patients (OR 7.9; CI 1.3-46.2) and patients of Black physicians had greater odds of enrolling (OR 56.5; CI 1.1-999.9) in a therapeutic trial. Significant patient therapeutic trial enrollment factors: belief trial may help (OR 76.9; CI 4.9->1000), concern about care if not on trial (OR12.1; CI 2.1-71.4), pressure to enroll (OR .27; CI 0.12-.64), caregiving without pay (OR 0.13; CI .02-.84). Significant physician beliefs were: patients would not do well on standard therapy (OR 3.6; CI 1.6-8.4), and trial would not be time consuming (OR 3.3; CI 1.3-8.1). CONCLUSIONS: Trial availability, patient and physician beliefs were factors identified that if modified could improve enrollment in cancer cooperative group clinical trials.

Minimally invasive diagnosis and treatment of endometrial cancer after LeFort colpocleisis.

BACKGROUND: Endometrial carcinoma is rare after LeFort colpocleisis. Standards for its diagnosis and treatment have not been established. CASE: A 74-year-old woman presented with postmenopausal bleeding 14 months after LeFort colpocleisis. Here, we describe the use of the colpocleisis channels in our novel 2-stage approach. In the first stage, endometrial carcinoma was diagnosed with vaginohysteroscopy and dilatation and curettage via the channels. In the second stage, the cancer was optimally treated with total robotic hysterectomy, bilateral salpingo-oophorectomy, and lymph node dissection. Assistance and specimen retrieval were achieved through the vaginal channels. The patient recovered without compromise to the pelvic floor. CONCLUSIONS: Endometrial cancer after LeFort colpocleisis can be diagnosed and treated with minimally invasive approaches without disrupting the colpocleisis or the pelvic floor support.

Tubal ligation frequency in Oklahoma women with cervical cancer.

OBJECTIVE: Infrequent Pap screening is an important risk factor for cervical cancer. We studied the association between contraceptive methods, screening frequency, and cancer. METHODS: Women (n=2004) enrolled in the cross-sectional Study to Understand Cervical Cancer Endpoints and Determinants (SUCCEED) underwent colposcopy to evaluate an abnormal Pap test. Questionnaire data were compared between those with cervical intraepithelial neoplasia (CIN) 3/adenocarcinoma in situ (AIS) and those with invasive cancer to identify factors associated with cancer. Logistic regression was used to calculate age-stratified measures of association between contraceptive method and Pap frequency as well as tubal ligation (TL) and cancer risk. RESULTS: In all age groups, women with TL were more likely to have had no Pap screening in the previous 5 years compared to women using other contraception: 26-35 years (OR 4.6, 95% CI 2.4-8.6; p<0.001), 36-45 years (OR 3.8, 95% CI 2.1-7.0; p<0.001), and 46-55 years (OR 2.2, 95% CI 1.0-4.9; p=0.050). Subjects with cancer (n=163) were more likely to have had a TL (41% vs. 21%, p<0.001) than those with CIN 3/AIS (n=370). Age-stratified analyses showed increased odds of tubal ligation in women with cancer versus those with CIN 3/AIS between 25 and 45 years, with a significant increase in women 26 to 35 years old (OR 3.3, 95% CI 1.4-8.1; p=0.009). Adjusting for Pap frequency changed the effect only slightly, suggesting that increased risk was not fully mediated by lack of screening. CONCLUSION: Contraceptive type is associated with Pap screening. Women with TLs obtain less frequent Pap testing and may be at an increased risk for cervical cancer.

Adjuvant chemotherapy for the "oldest old" ovarian cancer patients: can we anticipate toxicity-related treatment failure in a vulnerable population?

BACKGROUND: Patients aged > or = 80 years who are diagnosed with advanced ovarian cancer (OC) have been reported to have a poor prognosis. In the current study, chemotherapy-related toxicity data were evaluated between patients aged > or = 80 years and those aged < 80 years. METHODS: Patients with OC who underwent cytoreductive surgery with chemotherapy were included. Self-reported toxicity data were obtained from National Cancer Institute Common Toxicity Criteria (CTC) forms. Objective indicators of status including albumin level, weight, and creatinine clearance were abstracted both before and after therapy. Data were compared between patients by decade of age. RESULTS: A total of 246 patients were included. A presenting Karnofsky performance status >2 was recorded in 17% of patients aged > or = 80 years versus 0% to 4% of patients aged < 80 years (P = .002). Platinum-based chemotherapy was used in all patients. For patients aged < 80 years, combination chemotherapy was used in > 90% versus 69% in those aged > or = 80 years (P < .0001). Standard-dose combination therapy was used in 72% to 86% of patients aged <80 years versus 28% of patients aged > or =80 years (P < .0001). Patients aged > or =80 years completed > or =6 cycles of therapy approximately 57% of the time versus 84% to 97% of the time for those aged < 80 years (P = .0001). CTC forms identified no self-reported toxicities to be more common among patients aged > or =80 years. Multivariate logistic regression identified creatinine clearance < 65 mL/minute (odds ratio [OR] of 4.6), 5% weight loss (OR of 2.5), prechemotherapy albumin level of < 2 g/dL (OR of 3.65), and initiation of therapy with a single agent (OR of 3.9) as independent predictors of failure to complete chemotherapy. CONCLUSIONS: Despite initial treatment modifications as well as toxicity assessment, only 57% of patients aged > or =80 years completed planned chemotherapy. It was confirmed that further studies into the pharmacokinetics of chemotherapy in the elderly and more sensitive assessment of therapy-related toxicity are required.

Flexible heteroarotinoid (Flex-Het) SHetA2 inhibits angiogenesis in vitro and in vivo.

Flexible heteroarotinoids (Flex-Hets) compounds regulate growth, differentiation and apoptosis in cancer cells. The hypothesis of this study was that the lead Flex-Het, SHetA2, inhibits angiogenesis by blocking cytokine release from cancer cells. SHetA2 altered secretion of thrombospondin-4 (TSP-4), vascular endothelial growth factor A (VEGF) and fibroblast growth factor (bFGF) proteins from normal and cancerous ovarian and renal cultures. Thymidine phosphorylase (TP) expression was inhibited in cancer, but not normal cultures. Endothelial tube formation was stimulated by conditioned media from cancer but not normal cultures, and SHetA2 reduced secretion of this angiogenic activity. SHetA2 directly inhibited endothelial cell tube formation and proliferation through G1 cell cycle arrest, but not apoptosis. Recombinant TP reversed SHetA2 anti-angiogenic activity. SHetA2 inhibition of in vivo angiogenesis was observed in Caki-1 renal cancer xenografts. In conclusion, SHetA2 inhibits angiogenesis through alteration of angiogenic factor secretion by cancer cells and through direct effects on endothelial cells.

Stage IVB endometrial cancer: does applying an ovarian cancer treatment paradigm result in similar outcomes? A case-control analysis.

OBJECTIVE: The pattern of metastasis for Stage IV endometrial carcinoma (EC) is similar to that for ovarian carcinoma (OC), hence the goal of surgical management for both diseases is optimal cytoreduction (CRS) followed by adjuvant chemotherapy. The objective of this study is to evaluate overall survival (OS) and progression-free survival (PFS) in patients with advanced EC compared to a cohort of patients with OC matched for age and residual disease. METHODS: Patients with Stage IVB EC treated with curative intent between the years of 1990-2006 were identified and data abstracted regarding demographics, surgical procedures, pathologic factors, and follow-up. Two patients with Stage IIIC OC were matched for each Stage IVB EC based on age and residual disease. Stage IVB EC patients with distant metastasis were excluded. All OC patients underwent primary CRS and received combination platinum based chemotherapy. PFS and OS were evaluated using Kaplan-Meier curves and log-rank analysis. RESULTS: 55 patients with Stage IVB EC underwent primary CRS and adjuvant therapy with curative intent. Optimal CRS (<1 cm residual disease) was achieved in 87% (n=48). The most common histologic subtypes were serous (53%, n=29), endometrioid (44%, n=24) and clear cell (3%, n=2). Adjuvant therapy with curative intent included platinum based combination chemotherapy (60%, n=33), platinum based chemotherapy with radiation (25%, n=14), and radiation alone (15%, n=8) depending on the time period of treatment. Seven patients had residual disease >1 cm following CRS, 6 of whom received chemotherapy alone. Two-year OS for the entire cohort was 52 vs. 76% for patients with EC compared to OC (p=0.008). For suboptimal EC vs. OC patients was 33% vs. 66% for OC patients (p=NS). EC patients with optimal CRS had OS of 57% at 2 years compared to 82% for OC patients (p=0.02). Median PFS was 13 months vs. 20 months for all EC and OC patients, respectively (p=0.01). Using a Cox proportional hazards model, optimal CRS was associated with a survival advantage over suboptimal for EC patients with a hazard ratio of 2.4. CONCLUSIONS: The treatment paradigm for advanced EC has undergone a drastic evolution from palliation to CRS and combination chemotherapy. Despite similarities in disease distribution and histology, OS for EC patients with intraperitoneal metastasis does not approach that of patients with advanced OC. Further research to identify the molecular characteristics of EC may identify important differences from OC and provide insight for the development of novel primary and salvage treatment strategies for patients with advanced EC.

Ovarian cancer in the octogenarian: does the paradigm of aggressive cytoreductive surgery and chemotherapy still apply?

OBJECTIVE: The cornerstone of therapy for advanced ovarian cancer is cytoreductive surgery (CRS) followed by platinum based chemotherapy. Optimal management for very elderly women (>80) is unclear. This study sought to review the experience with treating ovarian cancer in this population. MATERIALS AND METHODS: This is a retrospective analysis of patients treated between 1991 and 2006. Outcomes included post-operative complications, chemotherapy received and overall survival. Statistical analysis was performed with SAS v.9.1. RESULTS: 85 patients were identified with a mean age of 84 years. 86% of patients presented with advanced disease. Primary CRS was performed on 80%. Among patients with advanced disease who underwent either primary (68) or interval debulking (2), 74% were left with <1 cm residual disease. Post-operative complications were common with 15% of patients suffering cardiac or pulmonary complications, over 10% with prolonged ileus, wound complications or mental status changes and over 30% requiring transfusion or antibiotics. Death prior to hospital discharge and within 60 days of surgery occurred in 13% and 20%. Among patients who underwent CRS, 13% were unable to receive indicated adjuvant therapy. Among those who were treated, 25% were treated with single agent platinum and 43% completed <3 cycles. Two-year overall survival for those who underwent CRS followed by adjuvant therapy is 51%. CONCLUSIONS: Our data suggests that patients >80 may not tolerate combination surgery and chemotherapy. The extremely high proportion of post-operative complications and relatively high proportion of post-operative deaths argues for a more prudent approach to this group of patients.

Intraperitoneal chemotherapy for patients with advanced epithelial ovarian cancer: a review of complications and completion rates.

OBJECTIVE: Intraperitoneal (i.p.) chemotherapy has a clear survival advantage in patients with advanced ovarian cancer, but the high rate of complications has discouraged widespread acceptance. The purpose of this study was to review the completion rate of patients receiving i.p. chemotherapy as first line treatment at a single institution and determine what factors prohibit completion of therapy. METHODS: Patients receiving i.p. chemotherapy from 1993 to 2006 were identified by hospital registries for a retrospective review. Charts were abstracted for patient demographics, clinical and pathologic findings, surgical intervention, treatment modalities, and toxicity. RESULTS: Eighty-three patients were identified who received front line treatment with i.p. chemotherapy. All patients received a platinum and taxane agent. Port placement (single lumen, venous access device) was completed at time of cytoreductive surgery (33%, n=27) or by mini-laparotomy (67%, n=56). Fifty patients (60%) completed a minimum of 6 cycles of treatment with a mean of 5 cycles. Eleven patients (13%) discontinued treatment due to catheter-related complications including infection (n=4), access difficulties (n=3), grade 4 abdominal pain (n=1), port leaking (n=1), and development of a peritoneal-vaginal fistula (n=1). Sixteen patients (19%) did not complete i.p. treatment because of chemotherapy-related toxicity. The remaining six patients did not complete chemotherapy due to disease progression or other reasons unrelated to modality of treatment. CONCLUSIONS: Few catheter-related complications were encountered in a review of front-line i.p. chemotherapy administration at a single institution using a single lumen venous access device. The majority of failures were due to persistent grade 3-4 chemotherapy toxicity. i.p. chemotherapy can be safely administered by a dedicated health-care team committed to i.p. chemotherapy as a front-line treatment.