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Population-Specific Immunogenomic Alterations in Gallbladder Cancer and Prognostic Significance.

Gallbladder carcinoma is a deadly disease with a poor prognosis, and recent clinical data suggest only a modest benefit of PD1/PDL1 inhibitors in this disease. Optimizing immunotherapeutic approaches will require a detailed understanding of the immunogenomic landscape of this disease worldwide. We combined targeted next-generation sequencing and immunohistochemistry to create detailed immunogenomic landscapes from 2 cohorts of gallbladder cancer cases from the United States (n = 60) and Chile (n = 62). Mutations in TP53, SMAD4, KRAS, PIK3CA, ARID2, ARID1A, ATM, FBXW7, ERBB2, and NF1 were found in both the US and Chilean primary cohorts, as well as amplifications in ERBB2, CCNE1, MDM2/CDK4, and CCND1. Despite similar mutation profiles, the immune profiles were distinct, with the Latin American cohort having higher densities of biomarkers associated with CD4+ T cells and PD-1 but lower densities of CD68+ macrophages compared with the North American cohort. Clustering and correlation analyses suggest novel immune subgroups and clinical associations independently of any specific mutations. Additionally, supported by multiplexed single-cell imaging technology, we identified low CD4 and high V-domain Ig suppressor of T cell activation as a candidate biomarker pair of poor outcomes. In summary, our findings highlight the importance of sensitivity to geographic location when considering therapeutic developments and pave a path for further immune investigations of this understudied disease.

Humans

Minimally invasive versus open surgery for gallbladder cancer: A systematic review and meta-analysis.

INTRODUCTION: Minimally invasive surgery (MIS) is increasingly being used in gallbladder cancer (GBC) for radical tumour extirpation. However, there are conflicting results on the morbidity outcomes following MIS. The aim of this meta-analysis was to compare the post-operative morbidity and mortality in patients undergoing radical surgery for GBC between MIS and open surgery. MATERIAL AND METHODS: Studies comparing MIS (laparoscopic, robotic or both techniques) to open surgery were included. The databases of MEDLINE, Cochrane and EMBASE were searched from 2001 till March 2025. The primary end point was post-operative morbidity and mortality. The secondary end points were hospital stay, blood loss, operative time and R1 resection rates. Random effect models were used for analysis. The risk of bias was assessed using the Newcastle-Ottawa scale. RESULTS: Thirty-two studies (laparoscopic [n = 19], robotic [n = 6] or both [n = 7]) involving 8568 (MIS = 3287 and open = 5281) patients were included. For overall and major morbidity (Clavian-Dindo >/ = III), the odds ratio (OR) of 0.60 (95% CI: 0.46-0.78) and 0.72 (95% CI: 0.52-1.0) respectively was obtained, favouring the MIS approach. Similarly, MIS showed lower odds for mortality [OR:0.62 (95% CI: 0.40-0.95)] compared to open surgery. MIS was associated with shorter hospital stay (less by mean of 3 days) and lesser blood loss (less by mean of 115 ml) but longer operative time (higher by mean of 5.8 min) and higher R1 resection rates (OR: 1.34; 95% CI: 1.05-1.71). Oncological outcomes, however, were comparable. The certainty of evidence was very low to low across the studies. CONCLUSION: MIS for GBC was associated with relatively lower post operative morbidity and mortality with similar oncological outcomes but with a small but heightened risk of margin positive (R1) resection, especially in primary GBC. The certainty of evidence was very low to low across the included studies. Future prospective studies are needed to overcome the clinical heterogeneity and possible selection bias.

Humans

[Cancer of the gallbladder].

The problems of diagnosis and treatment of the disease are analysed basing on the experience with 26 observations of gallbladder cancer. According to the authors' opinion the progress could be achieved only in the complex exploration, including roentgenocontrast examination of biliary passages, duodenography under conditions of artificial hypotension, ultrasonic biolocation of the gallbladder, hepatoscanning, dynamic scannography, selective angiography and combined laparoscopy. As a result of the performed combined laparoscopy cancer of the gallbladder was diagnosed in 11 of 15 examined patients. Recommendations for surgical therapy are given.

Aged

[Personal approach in the surgical treatment of cancer of the gallbladder].

The part played by surgery in the treatment of gallbladder cancer is conditioned by the delay in diagnosis and the rapid spread of the disease to non operable structures rather than to any particularly intrinsic malignity. In the face of a clinically ascertained cancer or one recognized at surgical exploration, exeresis is essential if possible. Cholecytectomy completed by cuneiform hepatic resection and extensive locoregional lymphadenectomy offers adequate radicality with acceptable risk. Vaster operations have high operative mortality which is out of proportion to the results possible, 43 personal cases are reported.

Cholecystectomy

Hyperhaptoglobinemia and carcinoma of the gallbladder.

Cancer of the gallbladder is an uncommon malignancy which is seldom diagnosed early and often denotes a poor prognosis. Two reported cases describe the association of hyperhaptoglobinemia (greater than 700 mg./dl.) and advanced carcinoma of the gallbladder. When a patient presents with liver involvement from metastatic adenocarcinoma of suspected gastrointestinal origin and a markedly elevated serum haptoglobin (greater than 700 mg./dl.), it is suggested that a high index of suspicion be held for carcinoma of the gallbladder.

Adenocarcinoma

[Porcelain gallbladder and cancer (author's transl)].

The porcelain gallbladder is a rare entity. It reaches especially the old woman. Most of the porcelain gallbladders have a great clinical latence. A cancer of the gallbladder exists in eleven per cent of the cases: this justifies a systematic cholecystectomy of the calcified gallbladders, even if they are asymptomatic. Another digestive cancer exists in nine per cent of the cases. Three personal observations of porcelain gallbladder which are associated with a cancer are described: they confirm the facts of the literature.

Aged

[Cancer of the gallbladder].

Clinical observations in 25 patients with cancer of the gallbladder are described. Tumor of this localization, as a rule, is characterized by a latent course with symptoms of cholelithiasis, chronic cholecystitis, manifested by jaundice and signs of neoplasia only ar later stages. Special attention is given to a frequent association of gallbladder cancer with an acute inflammatory process. The prophylaxis against gallbladder cancer is early surgery for cholelithiasis.

Aged

[Cancer risk in different types of gallstones (author's transl)].

Among 22,868 autopsied adults were 7,411 cases with cholelithiasis or cholecystectomy. In the cancerous gallbladders pigment-stones, pure crystalline cholesterol stones and lobulates stones were seldom found but multiple faceted stones and solitary combined stones are more frequent. If the partial volume of gallstones increased, there were more cases with cholecystitis or later carcinoma. Nevertheless in males with all forms of gallstones, carcinoma of the lung, the stomach, the colon and rectum and the prostatic gland were more frequent then carcinoma of the gallbladder. Only in female with multiple faceted stones and solitary combined stones, carcinoma of the gallbladder was the most frequent cancer. The "Störfeld" of the gallbladder with stones is more important for the localisation of a later carcinoma in female then for men. If the gallbladder with stones should be resected in good time, the patient is protected of the risk of cancer of gallbladder, but the percentage of all cancers among inoperated cases with gallstones is not higher than among cases with previons cholecystectomy. Instead of carcinoma of the gallbladder other cancers develop after cholecystectomy.

Adult