With the progression of global population aging,the incidence and mortality of prostate cancer have been increasing year by year,drawing widespread attention from all sectors of society.Based on the synthetic lethality strategy,the U.S.Food and Drug Administration(FDA)has successively approved multiple poly ADP-ribose polymerase(PARP)inhibitors for the treatment of metastatic castration-resistant prostate cancer(mCRPC)in recent years.This advancement has greatly stimulated the interest of researchers in novel synthetic lethal combination:the ataxia telangiectasia-mutated(ATM)gene and the ataxia telangiectasia and Rad3-related protein(ATR).In the DNA damage repair pathway,the ATM kinase primarily participates in the repair of DNA double-strand breaks,while ATR plays a crucial role in the repair of DNA single-strand breaks and exerts a positive regulatory function.ATR inhibitors are considered one of the most promising synthetic lethal targeted agents following PARP inhibitors,offering potential as a novel therapeutic option for patients with ATM gene mutations.However,current clinical research data on ATR inhibitors in the treatment of prostate cancer remain insufficient.Therefore,a deeper understanding of the synthetic lethality mechanism involving the ATM/ATR kinase combination is of crucial importance for advancing precision therapy of prostate cancer.

With the progression of global population aging,the incidence and mortality of prostate cancer have been increasing year by year,drawing widespread attention from all sectors of society.Based on the synthetic lethality strategy,the U.S.Food and Drug Administration(FDA)has successively approved multiple poly ADP-ribose polymerase(PARP)inhibitors for the treatment of metastatic castration-resistant prostate cancer(mCRPC)in recent years.This advancement has greatly stimulated the interest of researchers in novel synthetic lethal combination:the ataxia telangiectasia-mutated(ATM)gene and the ataxia telangiectasia and Rad3-related protein(ATR).In the DNA damage repair pathway,the ATM kinase primarily participates in the repair of DNA double-strand breaks,while ATR plays a crucial role in the repair of DNA single-strand breaks and exerts a positive regulatory function.ATR inhibitors are considered one of the most promising synthetic lethal targeted agents following PARP inhibitors,offering potential as a novel therapeutic option for patients with ATM gene mutations.However,current clinical research data on ATR inhibitors in the treatment of prostate cancer remain insufficient.Therefore,a deeper understanding of the synthetic lethality mechanism involving the ATM/ATR kinase combination is of crucial importance for advancing precision therapy of prostate cancer.

Objective To explore the diagnostic value of intravoxel incoherent motion diffusion-weighted imaging(IVIM-DWI)in diagnosis of different pathological types of lung cancer.Methods 45 patients were performed traditional MR and multi-b value DWI scan by GE discovery 750 MR.The values of Slow-ADC,Fast-ADC and ffast measured on a AW4.5 workstation were analyzed between the different pathological types of lung cancers.The correlations between these IVIM-DWI parameters and the serum tumor markers of lung cancer were analyzed.The diagnostic efficiency of these parameters were evaluated by receiver operator characteristic curve (ROC).Results 27 cases NSCLC(13 cases squamous carcinoma;14 cases adenocarcinoma )and 18 cases SCLC were finally included in this study.There were significant differences in Slow-ADC values between SCLC group and NSCLC group (P =0.00),the adenocarcinoma group (P=0.03),the squamous carcinoma group(P=0.01).There were no significant difference in Fast-ADC as well as ffast value between any two groups.The AUC of Slow-ADC value was 0.874.There existed negative correlation between squamous cell carcinoma antigen(SCC-Ag)of squamous carcinoma group and Slow-ADC(r=-0.730).Conclusion The Slow-ADC of IVIM-DWI parameters is useful in differential diagnosis of NSCLC and SCLC,which has the largest diagnostic efficiency.The correlation between SCC-Ag and Slow-ADC value has a certain meaning in diagnosing different pathological types of lung cancers.