Publications by authors named "Gerald Feldman"

Antibody-drug conjugates (ADCs) consist of an antibody backbone that recognizes and binds to a target antigen expressed on tumor cells and a small molecule chemotherapy payload that is conjugated to the antibody via a linker. ADCs are one of the most promising therapeutic modalities for the treatment of various cancers. However, many patients have developed resistance to this form of therapy.

View Article and Find Full Text PDF

The cell cycle checkpoint kinase 2 (CHEK2) is a tumor suppressor gene coding for a protein kinase with a role in the cell cycle and DNA repair pathways. Variants within CHEK2 are associated with an increased risk of developing breast, colorectal, prostate and several other types of cancer. Comprehensive genetic risk assessment leads to early detection of hereditary cancer and provides an opportunity for better survival.

View Article and Find Full Text PDF
Article Synopsis
  • PD-L1 expression on tumor tissues is not a reliable biomarker for all cancers, as some patients with PD-L1-negative tumors still benefit from anti-PD-(L)1 immunotherapy.
  • Recent studies suggest that analyzing blood samples could lead to better biomarkers for predicting responsiveness to this treatment.
  • The review highlights the need to understand PD-L1 regulation, current research on blood-based biomarkers, and the challenges faced in developing these methods for clinical use.
View Article and Find Full Text PDF

Immune checkpoint inhibitor (ICI) therapy has revolutionized anti-cancer treatment for many late-stage cancer patients. However, ICI therapy has thus far demonstrated limited efficacy for most patients, and it remains unclear why this is so. Interleukin 10 (IL-10) is a cytokine that has been recognized as a central player in cancer biology with its ability to inhibit anti-tumor T cell responses.

View Article and Find Full Text PDF
Article Synopsis
  • Immune checkpoint inhibitors (ICIs) are a promising cancer treatment, but some patients either don't respond or experience serious liver injuries associated with this therapy, known as immune-mediated liver injury (ILICI).
  • The combination of ICIs with other treatments has increased the occurrence and severity of ILICI, presenting a significant hurdle for safe and effective ICI use.
  • This review emphasizes the role of the liver's microenvironment in ILICI and suggests that understanding it better could lead to improved management strategies and biomarkers for predicting severe liver-related side effects.
View Article and Find Full Text PDF

The absence of reliable, robust, and non-invasive biomarkers for anti- Programmed cell death protein 1 (PD-1) immunotherapy is an urgent unmet medical need for the treatment of cancer patients. No predictive biomarkers have been established based on the direct assessment of T cell functions, the primary mechanism of action of anti-PD-1 therapy. In this study, we established a model system to test T cell functions modulated by Nivolumab using anti-CD3 monoclonal antibody (mAb)-stimulated peripheral blood mononuclear cells (PBMCs), and characterized T cell functions primarily based on the knowledge gained from retrospective observations of patients treated with anti-PD-1 immunotherapy.

View Article and Find Full Text PDF

Purpose: To assess the utilization of genetics on the United States Medical Licensing Examination (USMLE®).

Methods: A team of clinical genetics educators performed an analysis of the representation of genetics content on a robust sample of recent Step 1, Step 2 Clinical Knowledge (CK), and Step 3 examination forms. The content of each question was mapped to curriculum recommendations from the peer reviewed Association of Professors of Human and Medical Genetics white paper, Medical School Core Curriculum in Genetics, and the USMLE Content Outline.

View Article and Find Full Text PDF

Therapeutic proteins can be potent agents for treating serious diseases, but in many patients these proteins provoke antibody responses that blunt therapeutic efficacy. Intravenous administration of high doses of some proteins induces immune tolerance, but the mechanisms underlying this effect are poorly understood. As a model to study tolerance induction in mice, we used rasburicase, a commercial recombinant uricase used for the treatment of hyperuricemia.

View Article and Find Full Text PDF

Therapeutic monoclonal antibodies (mAbs) are commonly administered to patients through intravenous (IV) infusion, which involves diluting the medication into an infusion solution (e.g., saline and 5% dextrose).

View Article and Find Full Text PDF

Background: The current risk stratification systems used to guide management of endometrial cancer are based on irreproducible post surgical pathological information, hence the need for more reliable classification systems. Using microarray and sequencing technologies, TCGA recently identified four prognostically significant endometrial carcinoma subtypes, which subsequently proved reproducible using clinically applicable surrogate tests. Using these tests, we sought to determine the level of concordance between endometrial biopsies and subsequent hysterectomy specimens in assessing the molecular classification of endometrial carcinoma.

View Article and Find Full Text PDF

Newborn screening has evolved since its introduction in 1963. The disorders that are being screened for continue to evolve as new treatments and new technologies advance. In this review, the authors discuss the current state of newborn screening in the United States, including the disorders currently being screened for and how newborn screening is performed.

View Article and Find Full Text PDF

Immune checkpoint inhibitors (ICIs) such as the anti-PD-1 antibody Nivolumab, achieve remarkable clinical efficacy in patients with late stage cancers. However, only a small subset of patients benefit from this therapy. Numerous clinical trials are underway testing whether combining ICIs with other anti-cancer therapies can increase this response rate.

View Article and Find Full Text PDF

Aims And Objectives: To identify preclinical signs of dementia by exploring the experiences of family caregivers and professional care assistants.

Background: Dementia results in disability, emotional strain and financial loss for people with dementia, family members and nations. Informal identification of social and behavioural risk signifiers could facilitate timely interventions with potential to delay onset of serious disability.

View Article and Find Full Text PDF
Article Synopsis
  • Elevated plasma and urine levels of formiminoglutamic acid (FIGLU) usually indicate a rare genetic disorder called formiminoglutamic aciduria, caused by a deficiency in the FTCD enzyme involved in histidine and folate metabolism.
  • Researchers sequenced the FTCD gene in 20 individuals suspected of having FTCD deficiency, finding biallelic loss-of-function variants that contribute to increased FIGLU excretion.
  • The study identified 12 different mutations in the FTCD gene, providing molecular insights that support the diagnosis of FTCD deficiency in those detected through newborn screening and genetic testing.
View Article and Find Full Text PDF

Objective: The primary objective of this study is to evaluate the availability and duration of formal medical genetics and genomics (MGG) education during obstetrics and gynecology (OB/GYN) residency training in the United States compared to other noncore OB/GYN rotations.

Methods: We performed a review of rotation schedules published in all American Council for Graduate Medical Education (ACGME)-accredited OB/GYN residency programs' websites during the month of December 2016. Information regarding availability and duration of MGG rotation and other noncore OB/GYN rotations (ultrasound, breast health, and family planning) were collected.

View Article and Find Full Text PDF
Article Synopsis
  • Classic galactosemia is a genetic metabolic disorder leading to severe neonatal symptoms, which have significantly decreased due to successful newborn screening and dietary treatment.
  • Despite early interventions, many affected women face long-term reproductive issues, particularly primary ovarian insufficiency, with unclear underlying causes.
  • The review emphasizes the need for more research on reproductive health in women with classic galactosemia, highlights current gaps in understanding, and advocates for collaboration between specialists to enhance fertility preservation options.
View Article and Find Full Text PDF

Maternal cell-free DNA (cfDNA) results that are discordant with the diagnostic fetal karyotype should prompt further investigation. If deeper analysis of the cfDNA results demonstrates a "saw-tooth" pattern characteristic of genome-wide imbalance, maternal malignancy is suggested. Identifying the maternal malignancy can, however, be difficult.

View Article and Find Full Text PDF
Article Synopsis
  • The introduction of clinical genome and exome sequencing (CGES) is transforming the role of clinical geneticists, with many institutions investing in the necessary technology and infrastructure.
  • Understanding the benefits and limitations of CGES is essential for healthcare providers to properly interpret genomic variants related to health and disease.
  • Collaborative relationships among healthcare specialists and the development of updated training curricula for clinical genetics are crucial for adapting to advancements in genomic medicine.
View Article and Find Full Text PDF

The protein phosphatase 2A (PP2A) inhibitor, LB100, has been shown in pre-clinical studies to be an effective chemo- and radio-sensitizer for treatment of various cancers. We investigated effects associated with LB100 treatment alone and in combination with cisplatin for medulloblastoma (MB) in vitro and in vivo in an intracranial xenograft model. We demonstrated that LB100 had a potent effect on MB cells.

View Article and Find Full Text PDF

We have recently discovered that BRAF inhibitors induce potent macrophage responses that confer melanoma resistance to therapy. Our studies lay a foundation for the hypothesis that macrophages switch their role from a passenger to a driver for tumor survival during therapeutic treatment, suggesting that agents that target macrophages can be an important component of "cocktail" anticancer therapy.

View Article and Find Full Text PDF

Fcγ receptor I (FcγRI or CD64) is the sole human Fc receptor with high affinity for monovalent IgG. While it contains an immunoreceptor tyrosine-based activation motif in its cytoplasmic domain, binding of FcγRI can result in a complex array of activating and inhibitory outcomes. For instance, binding of monomeric IgG provides a low-intensity tonic signal through FcγRI that is necessary for full interferon γ receptor signaling in the same cell.

View Article and Find Full Text PDF