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Biomedical subjects

T A Splinter

Publications and source records attributed to T A Splinter.

At least 91 records · Page 5Linked to original sources

Chemotherapy as treatment of choice in extrapulmonary undifferentiated small cell carcinomas.

Extrapulmonary undifferentiated small cell carcinomas, especially those arising in the upper aerodigestive tract, form a group of neoplasms with a clinical behavior which resembles small cell carcinoma of the lung. In 11 patients treated by combination chemotherapy an objective response rate of 82% was achieved for a median duration of 8+ months. Median survival for all patients was 12 months. Long-term survival was observed in those patients with limited disease who achieved a complete response after chemotherapy followed by radiotherapy.

Adult↗

Chemotherapy in advanced non-small cell lung cancer.

Chemotherapy in advanced non-small cell lung cancer (NSCLC) has been evaluated with response rate, survival and quality of life as criteria. The data were collected from 142 phase II and III trials. The three main conclusions are: (1) multivariate landmark analyses show that a response to chemotherapy has an independent significant value for prognosis, and all studies of chemotherapy vs. best supportive care show some survival benefit in favour of chemotherapy; (2) NSCLC patients are a heterogeneous group with a large variation of known and unknown prognostic factors, such as the treatment centre, for both response and survival; and (3) retrospective analysis of the data show that response rate and survival are significantly correlated at response rate over 30% and in limited disease patients. The following recommendations are made: (1) new drugs should be compared in randomised phase II trials with a standard active drug; (2) randomised phase III trials of single agents or best supportive care vs. combination chemotherapy should be repeated in a well-defined subgroup of patients with a high performance score and limited tumour load; and (3) the palliative effect of chemotherapy in randomised trials in patients with symptoms should be investigated with relief of symptoms and quality of life as endpoints.

Antineoplastic Combined Chemotherapy Protocols↗

Diagnostic value of anti-neuronal antibodies for paraneoplastic disorders of the nervous system.

The diagnostic value of the presence of anti-neuronal antibodies in serum was examined in 21 patients suspected of paraneoplastic disorders of the nervous system (NS) (group 1) and was compared to three control groups; group 2: 25 patients with a neurological disease, without cancer and no sign of paraneoplastic disorder; group 3: 27 patients with neurological disease and cancer and no signs of a paraneoplastic disorder; group 4: 94 patients with cancer and without neurological disease. In group 1, anti-neuronal nuclear antibodies were detected in eight patients (38%), in titres from 1:1000 to 1:32,000. A small cell lung cancer was present in six patients, ovarian cancer in one patient and in one patient no tumour could be detected. The neurological symptoms preceded a diagnosis of cancer in five out of eight patients. Anti-neuronal antibodies were found in the serum of two out of 94 patients (2%) from control group 3 but not in serum from any of the other control groups. These data indicate a moderate sensitivity of 38%, but a high specificity of 98.6% (95% confidence interval 95.5-99.8%) for the presence of anti-neuronal nuclear antibodies if a paraneoplastic NS disorder is suspected.

Autoantibodies↗

Choriocarcinoma with lung metastases during pregnancy with successful delivery and outcome after chemotherapy.

A patient with an intrauterine pregnancy of 27 weeks had a coexisting pulmonary metastatic choriocarcinoma. On the chest radiograph the lung metastases appeared as pulmonary infiltrates, simulating atypical pneumonia. Serum human chorionic gonadotrophin levels were normal for gestational age. Treatment with methotrexate was successful. This is the first reported case of choriocarcinoma in a woman with a pregnancy of less than 35 weeks in which both mother and child survived. The case emphasises the need to consider choriocarcinoma in any pregnant woman who presents with haemoptysis and pulmonary nodules or infiltrates.

Adult↗

Adjuvant chemotherapy after resection of adenocarcinoma of the periampullary region and the head of the pancreas. A non-randomized pilot study.

From 1980 till 1984 16 patients were entered into a non-randomized pilot study, to investigate the feasibility of five courses of adjuvant 5-fluorouracil, Adriamycin and mitomycin C (FAM) after a curative resection of pancreatic or periampullary cancer. The survival of this group of patients was compared with that of 36 patients who underwent a curative resection alone between 1977 and 1984. Four patients received less than 20%, 4 patients 50%-60% and 7 patients greater than or equal to 80% of the calculated dose of adjuvant chemotherapy. The chemotherapy was badly tolerated. Only 1 patient resumed some of his normal activity during chemotherapy. The 3-year actuarial survival after curative resection with and without FAM was similar, i.e. 24% and 28% respectively. These data suggest that adjuvant FAM after a Whipple's operation or total pancreatectomy is not feasible because of additive postoperative and chemotherapy-induced morbidity.

Activities of Daily Living↗

Neuron-specific enolase can be used as the sole guide to treat small-cell lung cancer patients in common clinical practice.

Serum samples were collected from 115 small-cell lung cancer patients before each course of chemotherapy and during follow-up. Levels of neuron-specific enolase (NSE) were measured and compared to the clinical assessments of the course of the disease, which were done by the responsible physician without knowledge of NSE-values. The predictive accuracy of an increase or decrease of NSE for a major response (CR + PR), SD or PD was 98%. Importantly no false-positive rises of NSE were observed. On the basis of this large number of data it seems justified to conclude that in common clinical practice the treatment of small-cell lung cancer patients can be monitored by serial measurements of NSE alone.

Biomarkers, Tumor↗

Activated ras genes in human seminoma: evidence for tumor heterogeneity.

The incidence of mutations in cellular ras genes was determined in human seminoma, a germ cell tumor of the testis, with the aid of specific oligonucleotide probe hybridization. To eliminate the large number of nonneoplastic cells present in seminomas, aneuploid tumor cell nuclei were isolated from the tumor tissue by flow sorting. Mutations were detected in 40% of the seminomas at codons 12 or 61 of either the Ki-ras or the N-ras gene. No correlation was found with histopathological or clinical features. In some seminomas the mutant gene was present in only a fraction of the tumor cell population, suggesting tumor heterogeneity for ras gene mutations. Yet, flow cytometric measurement of nuclear DNA contents and histological examination of tumor tissue did not reveal two different tumor cell populations. We conclude from these observations that ras mutation is probably not the initial genetic event in the development of seminoma.

Animals↗