- |||||||||| Ibrance (palbociclib) / Pfizer, letrozole / Generic mfg.
Clinical, Journal: Palbociclib with Letrozole in Postmenopausal Women with ER+/HER2- Advanced Breast Cancer: Hematologic Safety Analysis of the Randomized PALOMA-2 Trial. (Pubmed Central) - Sep 2, 2020 P3 Although hematologic adverse events (AEs) are typically expected with anticancer therapies and are often clinically significant, palbociclib-related hematologic AEs, particularly neutropenia (most frequent AE), were transient/manageable by dose reduction, interruption, or cycle delay, which is in contrast to the more profound neutropenia associated with chemotherapy. Palbociclib dose adjustments decreased hematologic AE severity without appearing to compromise efficacy, supporting palbociclib + letrozole as a first-line treatment for ER+/HER2- ABC.
- |||||||||| letrozole / Generic mfg.
Preclinical, Journal: Role of aromatase activation on sodium arsenite-induced proliferation, migration, and invasion of MDA-MB-231 and MDA-MB-453 breast cancer cell lines. (Pubmed Central) - Sep 1, 2020 Sodium arsenite induced phosphorylation of Src that participated in sodium arsenite-induced aromatase activity, and -cell proliferation of MDA-MB-231 cell line. Overall, data suggests that sodium arsenite induces a positive-feedback loop, resulting in the promotion and progression of BCa cells, through induction of aromatase activity, E2 production, GPER1 stimulation, and Src activation.
- |||||||||| letrozole / Generic mfg.
Phase classification: Letrozole in Post-Menopausal Patients with Operable Hormone-Sensitive Breast Cancer (clinicaltrials.gov) - Aug 27, 2020 P2, N=300, Recruiting, To the best of our knowledge, the study is the first to report pancreatic role of PI3K/AKT/mTOR and TNF-α in PCOS and the first to demonstrate nanocurcumin promising potential against PCOS-related pancreatic molecular and histological pathologies that can indeed offer better control of the disease. Phase classification: P1 --> P2
- |||||||||| letrozole / Generic mfg.
Preclinical, Journal: Differential Sensitivity to In Vitro Inhibition of Cytochrome P450 Aromatase (CYP19) Activity Among 18 Freshwater Fishes. (Pubmed Central) - Aug 27, 2020 Five species were further investigated for sensitivity to up to 4 additional nonsteroidal aromatase inhibitors, letrozole, imazalil, prochloraz, and propiconazole...Fathead minnow, Japanese medaka, and zebrafish were among the least sensitive to all the investigated chemicals; therefore, ecological risks of aromatase inhibitors derived from these species might not be adequately protective of more sensitive native fishes. This information could guide more objective ecological risk assessments of native fishes to chemicals that inhibit aromatase.
- |||||||||| letrozole / Generic mfg., Arimidex (anastrozole) / AstraZeneca, Remedica
Journal: Effect of local aromatase inhibition in endometriosis using a new chick embryo chorioallantoic membrane model. (Pubmed Central) - Aug 27, 2020 Using a new chick embryo allantoic membrane (CAM) model incorporating xenografted human endometriosis cyst, we showed that topical treatment with anastrozole reduced lesion size, although oestrogens produced by CAM female embryo blunted this effect. Xenografted human endometriosis CAM is a new efficient model for the screening of new drugs targeting endometriosis tissue.
- |||||||||| letrozole / Generic mfg.
Retrospective data, Journal: IUI for unexplained infertility-a network meta-analysis. (Pubmed Central) - Aug 27, 2020 Stimulation agents for ovarian stimulation are clomiphene citrate (CC), Letrozole or gonadotrophins...We, therefore, suggest performing IUI with ovarian stimulation using gonadotrophins within a protocol that includes strict cancellation criteria. Obviously, this ignores the impact of costs and patients preference.
- |||||||||| letrozole / Generic mfg.
Retrospective data, Review, Journal: Comparison of clomiphene and letrozole for superovulation in patients with unexplained infertility undergoing intrauterine insemination: A systematic review and meta-analysis. (Pubmed Central) - Aug 27, 2020 There is no significant differences between the 2 groups in The total rate of pregnancy, pregnancy rate per cycle, multiple pregnancy and endometrial thickness. (RR= 1.06, I= 11%, P = .38; RR= 1.09, I= 7%, P = .32; RR= 0.79, I= 0%, P = .46; respectively) : Combined with the results of current systematic review and meta-analysis through subgroup analysis and sensitivity analysis, we can be cautious: in general, compared with CC, LE is an effective treatment in the IUI cycle, has a likelihood to improve dominant follicles and reduces the miscarriage rate.
- |||||||||| letrozole / Generic mfg., etoposide IV / Generic mfg.
Journal: Design, Synthesis, and Biological Evaluation of 1,2,4-Thiadiazole-1,2,4-Triazole Derivatives Bearing Amide Functionality as Anticancer Agents. (Pubmed Central) - Aug 26, 2020 The results confirmed that majority of the synthesized compounds showed moderate to potent anticancer activities aligned with four cell lines. Among the synthesized compounds, 8b, 8c, 8d, 8e, 8g and 8i displayed more potent activity along with inhibitory concentration values ranging from 0.10 ± 0.084 to 11.5 ± 6.49 µM than the standard IC values, which ranges from 1.91 ± 0.84 to 3.08 ± 0.135 µM, respectively.
- |||||||||| Verzenio (abemaciclib) / Eli Lilly
Trial completion date, Trial initiation date, Trial primary completion date, Combination therapy, Metastases: Hydroxychloroquine, Abemaciclib and Endocrine Therapy in Hormone Receptor Positive (HR+)/Her 2 Negative Breast Cancer (clinicaltrials.gov) - Aug 20, 2020 P1, N=44, Not yet recruiting, This pooled analysis supports the use of letrozole as an efficacious and safe alternative to mainstream regimens for endometrial preparation in FET cycles. Trial completion date: Jul 2024 --> Jul 2025 | Initiation date: Jul 2020 --> Jul 2021 | Trial primary completion date: Jul 2023 --> Jul 2024
- |||||||||| letrozole / Generic mfg.
Trial completion date, Trial primary completion date: Letrozole in Stimulated IVF Cycles (clinicaltrials.gov) - Aug 20, 2020 P3, N=900, Recruiting, Trial completion date: Jul 2024 --> Jul 2025 | Initiation date: Jul 2020 --> Jul 2021 | Trial primary completion date: Jul 2023 --> Jul 2024 Trial completion date: Dec 2020 --> Dec 2021 | Trial primary completion date: Dec 2019 --> Dec 2020
- |||||||||| Verzenio (abemaciclib) / Eli Lilly
Trial initiation date, Combination therapy, Metastases: GOG-3039: Abemaciclib and Letrozole to Treat Endometrial Cancer (clinicaltrials.gov) - Aug 20, 2020 P2, N=50, Not yet recruiting, Trial completion date: Dec 2020 --> Dec 2021 | Trial primary completion date: Dec 2019 --> Dec 2020 Initiation date: Jun 2020 --> Sep 2020
- |||||||||| Kisqali (ribociclib) / Novartis
Trial completion date, Trial primary completion date: GOG-3026: Ribociclib and Letrozole Treatment in Ovarian Cancer (clinicaltrials.gov) - Aug 19, 2020 P2, N=51, Recruiting, Initiation date: Jun 2020 --> Sep 2020 Trial completion date: Jul 2021 --> Dec 2021 | Trial primary completion date: Jul 2020 --> Dec 2021
- |||||||||| letrozole / Generic mfg.
Retrospective data, Journal: Letrozole and Unexplained Infertility: A Contemporary Meta-analysis. (Pubmed Central) - Aug 19, 2020 The results of a meta-analysis comparing the efficacy of clomiphene versus letrozole among couples with unexplained infertility in 2014 are in contrast to those of a randomized trial in 2015. This new meta-analysis included randomized studies that were not previously included and found that the efficacy of clomiphene or letrozole in women with unexplained infertility is comparable (Canadian Task Force Classification I).
- |||||||||| Ibrance (palbociclib) / Pfizer, Tukysa (tucatinib) / Pfizer
Enrollment closed, Enrollment change, Combination therapy, Metastases: Tucatinib, Palbociclib and Letrozole in Metastatic Hormone Receptor Positive and HER2-positive Breast Cancer (clinicaltrials.gov) - Aug 14, 2020 P1/2, N=42, Active, not recruiting, Table 1. Recruiting --> Active, not recruiting | N=25 --> 42
- |||||||||| letrozole / Generic mfg.
Preclinical, Journal: Decreased MicroRNA-125b-5p disrupts follicle Steroidogenesis through targeting PAK3/ERK1/2 Signalling in mouse Preantral follicles. (Pubmed Central) - Aug 4, 2020 This exploratory study suggests that FES-PET heterogeneity may potentially identify the subset of ER positive, metastatic breast cancer patients who benefit from letrozole combined with CDK inhibition. High serum LH concentrations in PCOS patients repress miR-125b-5p expression, which further increases Pak3 expression, leading to activation of ERK1/2 signalling, thus stimulating the expression of androgen synthesis-related enzymes and testosterone secretion in HA-PCOS.
- |||||||||| letrozole / Generic mfg.
Journal: Hyperactive LH pulses and elevated kisspeptin and NKB gene expression in the arcuate nucleus of a PCOS mouse model. (Pubmed Central) - Aug 2, 2020 We recently reported a novel mouse model of PCOS using chronic letrozole (LET; aromatase inhibitor)...Our findings indicate that LET mice, like PCOS women, have markedly elevated LH pulsatility which likely drives increased androgen secretion. Increased hypothalamic kisspeptin and NKB levels may be fundamental contributors to the hyperactive LH pulse secretion in the LET PCOS-like condition, and perhaps, in PCOS women.
- |||||||||| letrozole / Generic mfg.
Review, Journal: Intra-uterine insemination for unexplained subfertility. (Pubmed Central) - Aug 2, 2020 Similarly, treatment with IUI in a natural cycle probably results in a higher cumulative live birth rate compared to treatment with timed intercourse with OH. Treatment with IUI in a stimulated cycle may result in a higher cumulative live birth rate compared to treatment with IUI in a natural cycle.
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