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1.
Surgery ; 175(3): 687-694, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37880050

RESUMO

BACKGROUND: Axillary management for node-positive breast cancer continues to evolve. Data further supporting targeted axillary dissection after neoadjuvant chemotherapy was published in 2016 and may have induced changes in practice. METHODS: Patients included in the National Cancer Database from 2014 to 2017 with clinical T1 to T4 and node-positive disease who underwent neoadjuvant chemotherapy before surgical axillary management were evaluated. Patients were divided into the following 3 groups: selective axillary dissection, minimal axillary dissection, and maximal axillary dissection, according to surgical axillary management and pathological node status. RESULTS: Patients who underwent selective axillary dissection were younger (52.4 years ± 12.4, P < .0001) compared to maximal axillary dissection (55.1 ± 12.7) and minimal axillary dissection (54.6 ± 12.7). Patients with higher clinical stage more frequently underwent maximal axillary dissection, and those with lower tumor grade more frequently underwent minimal axillary dissection (P < .0001). Community cancer programs were more likely to perform maximal axillary dissection compared to all other types of programs and had the slowest rate of adoption of selective axillary dissection. Integrated Network Cancer Programs had the lowest proportion of maximal axillary dissection performed and the highest proportion of selective axillary dissection. Uninsured patients were more likely to receive maximal axillary dissection, and those with private insurance were more likely to undergo selective axillary dissection (P < .0001). Selective axillary dissection rates increased from 29.8% of procedures in 2016 to 41.5% in 2017, and MaxAD rates decreased from 62.4% in 2016 to 47.9% in 2017. CONCLUSION: Utilization of selective axillary dissection has increased since 2016; however, discrepancies in surgical axillary management after neoadjuvant chemotherapy still exist.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/cirurgia , Terapia Neoadjuvante , Excisão de Linfonodo/métodos , Axila/patologia , Bases de Dados Factuais , Linfonodos/cirurgia , Linfonodos/patologia , Biópsia de Linfonodo Sentinela , Estadiamento de Neoplasias
2.
Breast Care (Basel) ; 18(4): 240-248, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37900555

RESUMO

Introduction: Receiving a new breast cancer diagnosis can cause anxiety and distress, which can lead to psychologic morbidity, decreased treatment adherence, and worse clinical outcomes. Understanding sources of distress is crucial in providing comprehensive care. This study aims to evaluate the relationship between delays in breast cancer diagnosis and patient-reported distress. Secondary outcomes include assessing patient characteristics associated with delay. Methods: Newly diagnosed breast cancer patients who completed a distress screening tool at their initial evaluation at an academic institution between 2014 and 2019 were retrospectively evaluated. The tool captured distress levels in the emotional, social, health, and practical domains with scores of "high distress" defined by current clinical practice guidelines. Delay from mammogram to biopsy, whether diagnostic or screening mammogram, was defined as >30 days. Result: 745 newly diagnosed breast cancer patients met inclusion criteria. Median time from abnormal mammogram to core biopsy was 12 days, and 11% of patients experienced a delay in diagnosis. The non-delayed group had higher emotional (p = 0.04) and health (p = 0.03) distress than the delayed group. No statistically significant differences in social distress were found between groups. Additionally, patients with higher practical distress had longer time interval between mammogram and surgical intervention compared to those with lower practical distress. Older age, diagnoses of invasive lobular carcinoma or ductal carcinoma in situ, and clinical anatomic stages 0-I were associated with diagnostic delay. Conclusion: Patients with higher emotional or health-related distress were more likely to have timely diagnoses of breast cancer, suggesting that patients with higher distress may seek healthcare interventions more promptly. Improved understanding of sources of distress will permit early intervention regarding the devastating impact of breast cancer diagnosis.

3.
Ann Surg Oncol ; 30(9): 5692-5702, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37326811

RESUMO

BACKGROUND: Completion axillary lymph node dissection (cALND) was standard treatment for breast cancer with positive sentinel lymph nodes (SLNs) until 2011, when data from the Z11 and AMAROS trials challenged its survival benefit in early stage breast cancer. We assessed the contribution of patient, tumor, and facility factors on cALND use in patients undergoing mastectomy and SLN biopsy. PATIENTS AND METHODS: Using the National Cancer Database, patients diagnosed from 2012 to 2017 who underwent upfront mastectomy and SLN biopsy with at least one positive SLN were included. A multivariable mixed effects logistic regression model was used to determine the effect of patient, tumor, and facility variables on cALND use. Reference effect measures (REM) were used to compare the contribution of general contextual effects (GCE) to variation in cALND use. RESULTS: From 2012 to 2017, the overall use of cALND decreased from 81.3% to 68.0%. Overall, younger patients, larger tumors, higher grade tumors, and tumors with lymphovascular invasion were more likely to undergo cALND. Facility variables, including higher surgical volume and facility location in the Midwest, were associated with increased use of cALND. However, REM results showed that the contribution of GCE to the variation in cALND use exceeded that of the measured patient, tumor, facility, and time variables. CONCLUSIONS: There was a decrease in cALND use during the study period. However, cALND was frequently performed in women after mastectomy found to have a positive SLN. There is high variability in cALND use, mainly driven by interfacility practice variation rather than specific high-risk patient and/or tumor characteristics.


Assuntos
Neoplasias da Mama , Feminino , Humanos , Neoplasias da Mama/patologia , Mastectomia , Biópsia de Linfonodo Sentinela , Metástase Linfática/patologia , Excisão de Linfonodo/métodos , Axila/patologia , Linfonodos/patologia
5.
J Surg Oncol ; 127(4): 716-726, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36453464

RESUMO

BACKGROUND: Completion lymph node dissection (CLND) was the standard treatment for patients with melanoma with positive sentinel lymph nodes (SLN) until 2017 when data from the DeCOG-SLT and MLST-2 randomized trials challenged the survival benefit of this procedure. We assessed the contribution of patient, tumor and facility factors on the use of CLND in patients with surgically resected Stage III melanoma. METHODS: Using the National Cancer Database, patients who underwent surgical excision and were found to have a positive SLN from 2012 to 2017 were included. A multivariable mixed-effects logistic regression model with a random intercept for the facility was used to determine the effect of patient, tumor, and facility variables on the risk of CLND. Reference effect measures (REMs) were used to compare the contribution of contextual effects (unknown facility variables) versus measured variables on the variation in CLND use. RESULTS: From 2012 to 2017, the overall use of CLND decreased from 59.9% to 26.5% (p < 0.0001). Overall, older patients and patients with government-based insurance were less likely to undergo CLND. Tumor factors associated with a decreased rate of CLND included primary tumor location on the lower limb, decreasing depth, and mitotic rate <1. However, the contribution of contextual effects to the variation in CLND use exceeded that of the measured facility, tumor, time, and patient variables. CONCLUSIONS: There was a decrease in CLND use during the study period. However, there is still high variability in CLND use, mainly driven by unmeasured contextual effects.


Assuntos
Melanoma , Linfonodo Sentinela , Neoplasias Cutâneas , Humanos , Biópsia de Linfonodo Sentinela/métodos , Tipagem de Sequências Multilocus , Melanoma/patologia , Neoplasias Cutâneas/patologia , Excisão de Linfonodo/métodos , Linfonodo Sentinela/cirurgia , Linfonodo Sentinela/patologia
6.
Am Surg ; 89(6): 2427-2433, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35506914

RESUMO

INTRODUCTION: Resident physicians are uniquely at high financial risk given their long training programs, lack of financial education, and documented poor financial literacy. Budgeting for retirement savings is an important metric for financial literacy. METHODS: Semi-structured interviews were conducted with residents from two distinct surgery programs to assess their current financial status and their knowledge of and attitudes toward retirement savings strategies. Qualitative analysis was performed and the themes identified were examined in the context of previously reported quantitative survey data. RESULTS: As previously reported, 105 residents at Site 1 completed a comprehensive financial survey 56% of respondents reported having no retirement savings. On additional analysis, only 26% residents surveyed reported optimal savings habits defined as contributing $5000/year to a retirement account starting their first year of training. 23 residents from both sites and representing all post-graduate-year (PGY) levels then participated in the focused, semi-structured interviews. Site 2 residents were less likely to be female (P = .02) and carried a significantly larger debt burden (p < .01) but were otherwise comparable to residents from Site 1. On qualitative analysis three consistent themes emerged: (1) Resident understanding of strategies for retirement savings is poor; (2) Lack of knowledge is the primary barrier; (3) Surgical residents desire financial education. CONCLUSIONS: Surgery residents have a large debt burden, minimal retirement savings and an overall lack of understanding of savings strategies. Well-designed, early, and accessible educational interventions may improve the "financial vital signs" of surgical trainees and establish habits for long-term financial success.


Assuntos
Internato e Residência , Alfabetização , Humanos , Feminino , Masculino , Renda , Escolaridade , Inquéritos e Questionários
7.
J Surg Res ; 280: 486-494, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36067535

RESUMO

INTRODUCTION: Patient-reported outcome measures (PROMs/PROM) are standardized, validated instruments used to measure the patient's perception of their own health status including their symptoms, functional wellbeing, and mental health. Although PROMs were initially developed as research tools, their use in clinical practice for shared decision-making and to assess the impact of disease and treatment on quality of life of individual patients has been increasing. There is a paucity of research exploring providers' perspectives on the clinical integration of PROMs. We sought to use a qualitative methodology to understand surgeons' perceptions of integrating PROMs into their clinical practices. METHODS: Semistructured interviews were performed from November 2019 until August 2020. All interviews were recorded and transcribed verbatim. Thematic saturation was achieved after interviewing nine surgeons representing eight surgical specialties. Qualitative interview data were thematically analyzed using an inductive approach facilitated by Atlas.ti qualitative software. RESULTS: Forty seven unique codes were identified that fit into 21 themes that revealed five novel insights. Key insights included: (1) PROM data can modify surgical practice on an individual and institutional level, (2) Surgeon's view PROM clinical integration as a potential method of advancing patient-centered care, (3) There are various institutional processes that must be in place, including strong leadership and an integrative platform, to enable successful clinical PROM integration, (4) Surgeons appreciate challenges of integrating PROMs into surgical practice including risks of incorrect use or interpretation, and (5) A PROM platform must be adaptable to the diversity within surgery and to unique physician workflows. CONCLUSIONS: Surgeons perceived value from integrating PROMs into routine care to better inform patients during preoperative discussions and to help identify at-risk patients in the postoperative period. However, they also identified numerous barriers to the implementation of an integrated system for the routine use of PROMs in clinical practice and expressed concern about using PROMs to compare operative outcomes between surgeons. Based on this work, institutions that want to incorporate PROMs into surgical practice need a leadership team capable of supporting the change management necessary for effective integration and use a PROM platform that gives individual surgeons and surgical teams the ability to customize platforms for their unique practices.


Assuntos
Qualidade de Vida , Cirurgiões , Humanos , Medidas de Resultados Relatados pelo Paciente , Assistência Centrada no Paciente , Tomada de Decisão Compartilhada
8.
Surgery ; 172(5): 1407-1414, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36088172

RESUMO

BACKGROUND: Excess postoperative opioid prescribing increases the risk of opioid abuse, diversion, and addiction. Clinicians receive variable training for opioid prescribing, and despite the availability of guidelines, wide variations in prescribing practices persist. This quality improvement initiative aimed to assess and improve institutional adherence to published guidelines. METHODS: This study represented a quality improvement initiative at an academic medical center implemented over a 6-month period with data captured 1 year before and after implementation. The quality improvement initiative focused on prescribing education and monthly feedback reports for clinicians. All opioid-naïve, adult patients undergoing a reviewed procedure were included. Demographics, surgical details, hospital course, and opioid prescriptions were reviewed. Opioids prescribed on discharge were evaluated for concordance with recommendations based on published guidelines. Pre- and postimplementation cohorts were compared. RESULTS: There were 4,905 patients included: 2,343 preimplementation and 2,562 postimplementation. There were similar distributions in patient demographics between the 2 cohorts. Guideline-concordant discharge prescriptions improved from 50.3% to 72.2% after the quality improvement initiative was implemented (P < .001). Adjusted analysis controlling for sex, age, discharge clinician, length of stay, outpatient surgery, and procedure demonstrated a 190% increase in odds of receiving a guideline-concordant opioid prescription on discharge in the postimplementation cohort (adjusted odds ratio 2.90; 95% confidence interval = 2.55-3.30). CONCLUSION: This study represented a successful quality improvement initiative improving guideline-concordant opioid discharges and decreasing overprescribing. This study suggested published guidelines are insufficient without close attention to elements of effective change management including the critical importance of locally targeting educational efforts and suggested that real-time, data-driven feedback amplifies impact on prescribing behavior.


Assuntos
Analgésicos Opioides , Transtornos Relacionados ao Uso de Opioides , Adulto , Analgésicos Opioides/uso terapêutico , Fidelidade a Diretrizes , Humanos , Dor Pós-Operatória/tratamento farmacológico , Padrões de Prática Médica
9.
Surgery ; 172(3): 831-837, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35715235

RESUMO

BACKGROUND: As health care continues to evolve toward information transparency, an increasing number of patients have access to their medical records, including result reports that were not originally designed to be patient-facing. Previous studies have demonstrated that patients have poor understanding of medical terminology. However, patient comprehension of terminology specific to breast pathology reports has not been well studied. We assessed patient understanding of common medical terms found in breast pathology reports. METHODS: A survey was administered electronically to patients scheduled for a screening mammogram within a multisite health care system. Participants were asked to objectively define and interpret 8 medical terms common to breast biopsy pathology reports. Patient perception of the utility of various educational tools was also assessed. Demographic information including health literacy, education level, previous cancer diagnosis, and primary language was collected. RESULTS: In total, 527 patients completed the survey. Terms including "malignant" and "benign" were the most correctly defined at 80% and 73%, respectively, whereas only 1% correctly defined "high grade." Factors including race/ethnicity and education level were correlated with more correct scores. Patients preferred educational tools that were specific to their diagnosis and available at the time they were reviewing their results. CONCLUSION: Patient comprehension of common medical terminology is poor. Potential assumptions of understanding based on patient factors including education, past medical history, and occupation are misinformed. With the newly mandated immediate release of information to patients, there is a pressing need to develop and integrate educational tools to support patients through all aspects of their care.


Assuntos
Compreensão , Letramento em Saúde , Escolaridade , Humanos , Assistência Centrada no Paciente , Inquéritos e Questionários
11.
Ann Surg Oncol ; 29(2): 806-815, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34537899

RESUMO

INTRODUCTION: For patients with stage III melanoma with occult lymph node metastasis, the use of adjuvant therapy is increasing, and completion lymph node dissection (CLND) is decreasing. We sought to evaluate the use of modern adjuvant therapy and outcomes for patients with stage III melanoma who did not undergo CLND. METHODS: Patients with a positive SLNB from 2015 to 2020 who did not undergo CLND were evaluated retrospectively. Nodal recurrence, recurrence-free survival (RFS), distant metastasis-free survival (DMFS), and melanoma-specific survival were evaluated. RESULTS: Among 90 patients, 56 (62%) received adjuvant therapy and 34 (38%) underwent observation alone. Patients who received adjuvant therapy were younger (mean age: 53 vs. 65, p < 0.001) and had higher overall stage (Stage IIIb/c 75% vs. 54%, p = 0.041). Disease recurred in 12 of 34 patients (35%) in the observation group and 11 of 56 patients (20%) in the adjuvant therapy group. The most common first site of recurrence was distant recurrence alone (5/34 patients) in the observation group and nodal recurrence alone (8/90 patients) in the adjuvant therapy group. Despite more adverse nodal features in the adjuvant therapy group, 24-month nodal recurrence rate and RFS were not significantly different between the adjuvant and observation cohorts (nodal recurrence rate: 26% vs. 20%, p = 0.68; RFS: 75% vs. 61%, p = 0.39). Among patients with stage IIIb/c disease, adjuvant therapy was associated with a significantly improved 24-month DMFS (86% vs. 59%, p = 0.04). CONCLUSIONS: In this early report, modern adjuvant therapy in patients who forego CLND is associated with longer DMFS among patients with stage IIIb/c disease.


Assuntos
Melanoma , Linfonodo Sentinela , Neoplasias Cutâneas , Humanos , Excisão de Linfonodo , Melanoma/cirurgia , Pessoa de Meia-Idade , Estudos Retrospectivos , Biópsia de Linfonodo Sentinela , Neoplasias Cutâneas/cirurgia
12.
Am J Surg ; 223(1): 120-125, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34407917

RESUMO

INTRODUCTION: Post-procedural debrief is recommended to improve patient safety. We examined operating room (OR) clinicians' perceptions of the impact of a multi-disciplinary debrief on OR culture. METHODS: A survey was administered to 182 OR clinicians at a major academic medical center. Attitudes toward the surgical debrief and its effect on patient safety and OR culture were evaluated. RESULTS: Majority of clinicians (58.2%) believed creating a culture of safety in the OR was a shared care team responsibility, however, surgical attendings and trainees were more likely to assign this responsibility to the surgical attending. Few circulating nurses and trainees felt comfortable initiating a surgical debrief. Overall clinicians agreed that a debrief would impact both patient safety outcomes and OR culture. CONCLUSIONS: Clinicians felt implementation of a surgical debrief would positively affect the OR culture of safety by improving interdisciplinary communication and influencing the power hierarchy that exists in many ORs.


Assuntos
Lista de Checagem/normas , Comunicação Interdisciplinar , Salas Cirúrgicas/organização & administração , Equipe de Assistência ao Paciente/organização & administração , Segurança do Paciente , Adulto , Feminino , Humanos , Masculino , Salas Cirúrgicas/normas , Cultura Organizacional , Equipe de Assistência ao Paciente/normas , Melhoria de Qualidade , Inquéritos e Questionários
13.
Ann Surg ; 276(6): e923-e931, 2022 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-33351462

RESUMO

OBJECTIVE: To assess the contribution of unknown institutional factors (contextual effects) in the de-implementation of cALND in women with breast cancer. SUMMARY OF BACKGROUND DATA: Women included in the National Cancer Database with invasive breast carcinoma from 2012 to 2016 that underwent upfront lumpectomy and were found to have a positive sentinel node. METHODS: A multivariable mixed effects logistic regression model with a random intercept for site was used to determine the effect of patient, tumor, and institutional variables on the risk of cALND. Reference effect measureswere used to describe and compare the contribution of contextual effects to the variation in cALND use to that of measured variables. RESULTS: By 2016, cALND was still performed in at least 50% of the patients in a quarter of the institutions. Black race, younger women and those with larger or hormone negative tumors were more likely to undergo cALND. However, the width of the 90% reference effect measures range for the contextual effects exceeded that of the measured site, tumor, time, and patient demographics, suggesting institutional contextual effects were the major drivers of cALND de-implementation. For instance, a woman at an institution with low-risk of performing cALND would have 74% reduced odds of havinga cALND than if she was treated at a median-risk institution, while a patient at a high-risk institution had 3.91 times the odds. CONCLUSION: Compared to known patient, tumor, and institutional factors, contextual effects had a higher contribution to the variation in cALND use.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Neoplasias da Mama/patologia , Biópsia de Linfonodo Sentinela , Axila , Metástase Linfática/patologia , Excisão de Linfonodo , Linfonodos/patologia
14.
Am J Surg ; 224(1 Pt A): 27-34, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-34903369

RESUMO

OBJECTIVES: The 21st Century Cures Act requires that institutions release all electronic health information (EHI) to patients immediately. We aimed to understand patient and clinician attitudes toward the immediate release of EHI to patients. METHODS: Patients and clinicians representing distinct specialties at a single academic medical center completed a survey to assess attitudes toward the immediate release of results. Differences between patient and clinician responses were compared using chi-square and student's t-test for categorical and continuous variables, respectively. A two-sided significance level of 0.05 was used for all statistical tests. RESULTS: 69 clinicians and 57 patients completed the survey. Both patients (89.7%) and clinicians (80.6%) agreed or strongly agreed-here after referred to as agreed, that providing patients with access to their health information is necessary in delivering high-quality care. However, 62.7% of clinicians agreed that results released immediately would be more confusing than helpful, whereas the minority of patients agreed with this statement (15.8%) (p < 0.05). Providers were also more likely to disagree that patients are comfortable independently interpreting blood work results (p < 0.05), radiology results (p < 0.05) and pathology reports (p < 0.05). With regard to timing, the majority of patients (75.1%) felt their provider should contact them within 24 h of the release of an abnormal result, whereas only 9.0% of clinicians agreed with this timeframe (p < 0.05). DISCUSSIONS: Patients and clinicians value information transparency. However, the immediate release of results is controversial, especially among clinicians. The discrepancy between patient and clinician perceptions underlines the importance of setting expectations about the communication of results. Additionally, our results emphasize the need to implement strategies to help improve patient comprehension, decrease patient distress and improve clinician workflows.


Assuntos
Comunicação , Radiologia , Eletrônica , Humanos , Encaminhamento e Consulta , Inquéritos e Questionários
16.
Am J Med Genet A ; 164A(7): 1765-9, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24677512

RESUMO

We present the literature review of ring chromosome 7 and clinical, cytogenetic and fine molecular mapping of the first postnatal report of a male child with a non-supernumerary ring chromosome 7, r(7). The patient had dysmorphic features, developmental delay, dermatologic lesions with variable pigmentation, hypogenitalism, lumbar dextroscoliosis, cerebellar and ophthalmological abnormalities, and melanocytic congenital nevi. Cytogenetic analysis of peripheral blood and the nevus sample showed the presence of three different cell lines r(7), monosomy 7, and duplicated r(7) (idic r(7)), while findings on fibroblasts from both light and dark skin showed only mosaicism with r(7) and monosomy 7 cell lines in various proportions. FISH assay of the ring chromosome showed subtelomeric loss in both chromosome arms in all tissues studied. Analysis by genome-wide single-nucleotide polymorphism array showed a 0.8 Mb deletion in 7p22.3 (involving eight genes) and a 7.5 Mb deletion in 7q36 (involving 29 genes including some involved in genital and central nervous system development). The combination of results from our karyotypic and array analyses enabled us to establish an accurate genotype-phenotype relationship.


Assuntos
Transtornos Cromossômicos/diagnóstico , Transtornos Cromossômicos/genética , Análise Citogenética , Mosaicismo , Fenótipo , Bandeamento Cromossômico , Cromossomos Humanos Par 7/genética , Hibridização Genômica Comparativa , Estudos de Associação Genética , Humanos , Hibridização in Situ Fluorescente , Lactente , Masculino , Cromossomos em Anel
18.
Eur J Med Genet ; 55(5): 381-7, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22406087

RESUMO

Ring Chromosome 20 syndrome is a rare chromosomal disorder characterized by refractory epilepsy, with seizures in wakefulness and sleep, behavioral problems and mild to severe cognitive impairment. Facial dysmorphism or other congenital malformations are rarely reported making it difficult to diagnose the syndrome based on clinical findings alone. Therefore, diagnosis requires cytogenetic testing. More than 100 cases have been published since the initial report in 1972. In some patients, the ring (20) is found in all cells analyzed and in these cases, the ring is almost always accompanied by deletions of 20pter and/or 20qter. However, in the majority of cases the ring is present in only a proportion of cells, with two normal 20's in the remaining cells (mosaicism), and in these cases, no deletions of chromosome 20 have been observed. Patients with supernumerary r(20) chromosomes have also been identified, but these individuals do not generally have seizures and are not discussed in this review. Characterization by fluorescence in situ hybridization and array-based analysis has shed insight into the molecular composition and possible mechanisms of ring formation, in both the mosaic and non-mosaic patients. The age of onset of seizures correlates with the percentage of cells with the ring in mosaic patients. While the underlying etiology of the phenotype is still not understood, evidence is accumulating which suggests the deletion of candidate genes on chromosome 20 is not responsible. Cytogenetic analysis, rather than chromosomal microarray analysis is recommended for diagnosis of this syndrome, as the mosaic cases do not have copy number alterations and are therefore not identified by array-based analysis.


Assuntos
Cromossomos Humanos Par 20 , Cromossomos em Anel , Convulsões/genética , Ondas Encefálicas , Humanos , Mosaicismo , Fenótipo , Convulsões/diagnóstico , Convulsões/fisiopatologia , Deleção de Sequência , Síndrome
19.
Semin Cell Dev Biol ; 23(4): 450-7, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22306179

RESUMO

Mutations in Notch signaling pathway members cause developmental phenotypes that affect the liver, skeleton, heart, eye, face, kidney, and vasculature. Notch associated disorders include the autosomal dominant, multi-system, Alagille syndrome caused by mutations in both a ligand (Jagged1 (JAG1)) and receptor (NOTCH2) and autosomal recessive spondylocostal dysostosis, caused by mutations in a ligand (Delta-like-3 (DLL3)), as well as several other members of the Notch signaling pathway. Mutations in NOTCH2 have also recently been connected to Hajdu-Cheney syndrome, a dominant disorder causing focal bone destruction, osteoporosis, craniofacial morphology and renal cysts. Mutations in the NOTCH1 receptor are associated with several types of cardiac disease and mutations in NOTCH3 cause the dominant adult onset disorder CADASIL (cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy), a vascular disorder with onset in the 4th or 5th decades. Studies of these human disorders and their inheritance patterns and types of mutations reveal insights into the mechanisms of Notch signaling.


Assuntos
Receptores Notch/fisiologia , Transdução de Sinais , Anormalidades Múltiplas/genética , Anormalidades Múltiplas/metabolismo , Síndrome de Alagille/genética , Síndrome de Alagille/metabolismo , Animais , Proteínas de Ligação ao Cálcio/genética , Síndrome de Hajdu-Cheney/genética , Síndrome de Hajdu-Cheney/metabolismo , Cardiopatias Congênitas/genética , Cardiopatias Congênitas/metabolismo , Cardiopatias/genética , Cardiopatias/metabolismo , Hérnia Diafragmática/genética , Hérnia Diafragmática/metabolismo , Humanos , Peptídeos e Proteínas de Sinalização Intercelular/genética , Proteína Jagged-1 , Proteínas de Membrana/genética , Mutação , Receptores Notch/genética , Receptores Notch/metabolismo , Proteínas Serrate-Jagged
20.
Am J Med Genet A ; 158A(1): 85-9, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22105858

RESUMO

Alagille syndrome (ALGS) is an autosomal dominant condition, primarily caused by mutations in JAGGED1. ALGS is defined by cholestatic liver disease, cardiac disease and involvement of the face, skeleton, and eyes with variable expression of these features. Renal involvement has been reported though not formally described. The objective of this study was to systematically characterize the renal involvement in ALGS. We performed a retrospective review of 466 JAGGED1 mutation-positive ALGS patients. Charts were reviewed for serum biochemistries, renal ultrasounds or other imaging, urinalysis, and clinical reports from pediatric nephrologists. The clinical data were reviewed by two pediatric hepatologists and a pediatric nephrologist. Of 466 charts reviewed we found 187 yielded evaluable renal information. Of these, 73/187 were shown to have renal involvement, representing 39% of the study cohort. Renal dysplasia was the most common anomaly seen. Genotype analysis of the JAGGED1 mutations in the patients with and without renal involvement did not reveal an association with mutation type. From the study we concluded that renal involvement has a prevalence of 39% in ALGS in our evaluable patients. Renal dysplasia is the most common renal anomaly. This finding correlates with the known role of the Notch pathway in glomerular development. Since renal disease of the type seen in ALGS can impair growth and impact liver transplantation, there is a clear need for a prospective study of renal involvement in ALGS and the development of guidelines for evaluation and management. These data also suggest that renal involvement be considered the sixth defining criterion for ALGS.


Assuntos
Síndrome de Alagille/genética , Nefropatias/genética , Rim/anormalidades , Síndrome de Alagille/complicações , Síndrome de Alagille/diagnóstico , Proteínas de Ligação ao Cálcio/genética , Criança , Genótipo , Humanos , Peptídeos e Proteínas de Sinalização Intercelular/genética , Proteína Jagged-1 , Nefropatias/diagnóstico , Nefropatias/etiologia , Proteínas de Membrana/genética , Mutação , Prevalência , Estudos Retrospectivos , Proteínas Serrate-Jagged
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